WO2020034911A1 - Communication method and communication appratus - Google Patents

Abstract

Provided are a communication method and a communication apparatus. In the communication method, an SMF network element determines, according to a PCC rule of a flow, a third time delay of the flow being transmitted from a UPF network element to a UE, so that a second time delay of the flow being transmitted from a flow service talker in a TSN to the UE can be determined according to the third time delay and a first time delay of the flow being transmitted from the flow service talker in the TSN to the UPF network element. According to the communication method and the communication apparatus provided in the present application, a relatively simple implementation method is used to determine a cumulative time delay of the flow being transmitted from the UPF network element to the UE, that is, a relatively simple method is used to determine a cumulative time delay of the flow being transmitted from the flow service talker in the TSN to the UE.

Description

Communication method and communication device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 13, 2018, with an application number of 201810918006.5, and the application name is "Communication Method and Communication Device", and a Chinese patent filed on October 08, 2018 Office, application number 201811169219.9, and application name "communication method and communication device" for the priority of Chinese patent applications, the entire contents of which are incorporated herein by reference.

Technical field

The present application relates to the field of communication, and more particularly, to a communication method and a communication device.

Background technique

Currently, communications proposed third generation partnership project ^{(3 rd generation partnership project, 3GPP} ) network and time-sensitive network (time sensitive network, TSN) interoperable communications technology. In the scenario where the 3GPP core network is interoperable with the TSN, the terminal equipment (user equipment, UE) can serve as a stream service receiver (listener), and receive the flow sent by the TSN stream service provider (talker); It can be used as a stream service provider to send a stream to the stream service receiver in the TSN, such as an ultra-reliable and low latency communications (URLLC) stream. A user plane function (UPF) network element, as the boundary between the TSN and the 3GPP network, can have the basic functions of a bridge in the TSN.

To realize the interworking between the 3GPP network and the TSN, it is necessary to calculate the cumulative delay when the stream is transmitted between the UE and the UPF network element in the 3GPP network.

Therefore, how to determine the cumulative delay during the transmission between the UE and the UPF network element is a technical problem to be solved urgently.

Summary of the Invention

The present application provides a communication method and a communication device, which can determine a cumulative delay when a stream is transmitted between a UE and a UPF network element.

In a first aspect, the present application provides a communication method. The communication method includes: a session management function (SMF) network element receives first delay information of a flow from a UPF network element, and the first delay information is used to instruct the flow to provide a flow service from a TSN The first delay of transmission from the UPF network element; the SMF network element determines that the flow is transmitted from the UPF network element to the UPF network element according to a policy and charging control (PCC) rule of the flow The third delay of the UE; and the SMF network element determines the first transmission of the stream from the stream service provider in the TSN to the UE according to the first delay and the third delay Two delays; the SMF network element sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay.

In this communication method, the SMF network element determines a third delay of the flow transmission from the UPF network element to the UE according to the PCC rule, and uses the third delay as the cumulative delay of the flow transmission from the UPF network element to the UE to enable the SMF The network element may determine the second delay for transmitting the stream from the stream service provider in the TSN to the UE according to the third delay and the first delay in transmitting the stream from the stream provider in the TSN to the UPF network element. The QoS of the stream can be guaranteed and the stream can be transmitted according to the second delay in a communication network in which the 3GPP network and the TSN are interworking.

In addition, the SMF network element determines, according to the PCC rule, the third delay in which the stream is transmitted from the UPF network element to the UE as the cumulative delay in which the stream is transmitted from the UPF network element to the UE. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization of all nodes between the UPF network element and the UE is achieved, so that the UPF network element The TSN network is supported on all transmission nodes to the UE to calculate the cumulative delay of the stream being transmitted from the UPF network element to the UE. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

The third delay may be a maximum transmission delay of a stream transmitted from the UPF network element to the UE.

With reference to the first aspect, in a first possible implementation manner, the SMF network element determines that the stream is provided from the stream service in the TSN according to the first delay and the third delay. The second delay transmitted from the UE to the UE includes: determining, by the SMF network element, the sum of the first delay and the third delay as the second delay.

With reference to the first aspect or the first possible implementation manner, in a second possible implementation manner, the communication method further includes that the SMF network element determines that the bandwidth resource can be reserved for the flow according to the PCC rule. .

For example, before sending the second delay information to the UPF network element, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that it can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may send the second delay information to the UPF network element; otherwise, the SMF network element may not send the second delay information to the UPF network element. Two delay information.

For example, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow before determining the second delay according to the first delay and the third delay. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may determine the second delay according to the first delay and the third delay, and Perform subsequent operations; otherwise, the SMF network element may not determine the second delay based on the first delay and the third delay, and may not perform subsequent operations.

For example, before determining the third delay according to the PCC rule, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF The network element may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

The SMF network element performs subsequent related operations only when it is determined that the bandwidth resource can be reserved for the flow, which can improve the execution efficiency of the SMF network element.

Of course, the SMF network element can also determine whether the UPF network element can reserve bandwidth resources for the flow after sending the second delay information to the UPF network element, which is not limited in this application.

With reference to the first aspect or the first or second possible implementation manner, in a third possible implementation manner, the communication method further includes that the SMF network element sends the stream to the UPF network element. Bandwidth demand information.

The SMF network element sends a bandwidth demand message of the flow to the UPF network element, so that the UPF network element reserves bandwidth resources for the flow according to the bandwidth demand information, so that when the flow is transmitted to the UPF network element, the UPF network element can have Corresponding bandwidth resources are used to transmit the stream, which can further improve the transmission reliability of the stream.

Optionally, the SMF network element may send the bandwidth demand message of the flow to the UPF network element only when the SMF network element determines that the bandwidth resource can be reserved for the flow.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the communication method further includes: the SMF network element sending the stream to an access network device corresponding to the UE Bandwidth demand information.

The access network device reserves bandwidth resources for the stream according to the bandwidth demand information, so that the access network can have corresponding bandwidth resources to transmit the stream, thereby improving the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

Optionally, the SMF network element may determine that it can reserve bandwidth resources for the flow before sending the flow bandwidth demand message to the access network device serving the UE.

With reference to the fourth possible implementation manner, in a fifth possible implementation manner, the communication method further includes: the SMF network element receives first information from the access network device, and the first information is used for Indicates whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

For example, the SMF network element may detect whether the first information is received from the access network device before sending the second delay information to the UPF network element. If the SMF network element receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element may send the second delay information to the UPF network element; otherwise, the SMF network element may not send the UPF network element Send the second delay information.

For example, the SMF network element may detect whether the first information is received from the access network device before determining the second delay according to the first delay and the third delay. If the SMF network element receives the first information, the SMF network element may determine a second delay based on the first delay and the third delay, and perform subsequent operations; otherwise, the SMF network element may not use the first delay And the third delay determines a second delay, and no subsequent operations are performed.

For example, the SMF network element may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the SMF network element receives the first information, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF network element may not determine the third delay according to the PCC rule, and No subsequent operations are performed.

The SMF network element performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the SMF network element.

Of course, the SMF network element may also receive the first information from the access network device after sending the second delay information to the UPF network element, which is not limited in this application.

With reference to the first aspect or any one of the foregoing possible implementation manners, in a sixth possible implementation manner, the communication method further includes: sending the SMF network element to a policy control function (PCF) network element Information of the flow, which is used for determining a PCC rule of the flow; the SMF network element receives the PCC rule from the PCF network element.

In this implementation manner, the PCC rule used by the SMF network element to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the SMF network element from the PCF network element.

The SMF network element may cache the PCC rule after obtaining the PCC rule corresponding to the flow from the PCF network element. In this way, the next time an SMF network element needs to use the PCC rules corresponding to the flow, it can be obtained directly from the SMF network element instead of from the PCF network element, which can improve efficiency.

With reference to the sixth possible implementation manner, in a seventh possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream, the priority of the stream, the maximum allowable delay for a single frame of the stream from the Talker to the Listener, or the reliability of the stream demand.

That is, the SMF network element can send one or more of the above information to the PCF network element, so that the PCF network element can determine and return the corresponding PCC rule to the SMF network element based on the one or more information.

In a second aspect, the present application provides a communication method. The communication method includes: an SMF network element receives first delay information of a flow from a UE, the first delay information is used to indicate a first delay; the SMF network element determines the flow according to a PCC rule of the flow A third delay transmitted from the UE to a UPF network element; the SMF network element determines that the stream is transmitted from the UE to the UPF network element according to the first delay and the third delay The second delay of the SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay.

In this communication method, the SMF network element receives the first delay information from the UE and learns the first delay determined by the UE and the stream is transmitted from the UE to the UPF network element according to the first delay information. In addition, the SMF network element is based on The PCC rule determines the third delay of the flow from the UE to the UPF network element, and then the SMF network element adjusts the first delay determined by the UE and the third delay determined by the SMF network element, so that the flow can be transmitted from the UE to the The second delay of the UPF network element can further be used to determine that the QoS of the stream can be guaranteed and the stream can be transmitted according to the second delay in a communication network in which the 3GPP network and the TSN are interoperable.

In addition, the SMF network element determines the cumulative delay of the flow from the UE to the UPF network element according to the third delay of the flow from the UE to the UPF network element and the first delay determined by the UE. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that the UPF network element The TSN network is supported on all transmission nodes to the UE to calculate the cumulative delay of the flow from the UE to the UPF network element. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

Optionally, the third delay may be a maximum transmission delay of the flow transmitted from the UE to the UPF network element.

With reference to the second aspect, in a first possible implementation manner, the SMF network element determines, according to the first delay and the third delay, a first time that the stream is transmitted from the UE to the UPF. The two delays include: adding, by the SMF network element, the first delay and the third delay, and subtracting the transmission delay of the stream from the UE to the UPF network element. The value obtained by using the default value is determined as the second delay.

An example of a default value of a transmission delay of a stream transmitted from the UE to the UPF network element is 500 nanoseconds (nm). That is, the first delay may be added to the third delay, and a value obtained by subtracting 500 nm may be determined as the second delay.

With reference to the second aspect or the first possible implementation manner, in a second possible implementation manner, the communication method further includes that the SMF network element determines that the bandwidth resource can be reserved for the flow according to the PCC rule. .

For example, before sending the second delay information to the UPF network element, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the SMF network element may send the second delay information to the UPF network element; otherwise, the SMF network element may not The UPF network element sends the second delay information.

For example, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow before determining the second delay according to the first delay and the third delay. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may determine the second delay according to the first delay and the third delay, and Perform subsequent operations; otherwise, the SMF network element may not determine the second delay based on the first delay and the third delay, and may not perform subsequent operations.

For example, before determining the third delay according to the PCC rule, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF The network element may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

In this implementation manner, the SMF network element performs subsequent related operations only when it is determined that the bandwidth resource can be reserved for the flow, which can improve the execution efficiency of the SMF network element.

With reference to the second possible implementation manner, in a third possible implementation manner, the communication method further includes: the SMF network element sending the bandwidth requirement information of the flow to the UPF network element.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element can send the flow bandwidth demand message to the UPF network element, so that the UPF network element reserves the flow according to the bandwidth demand information. Bandwidth resources, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

With reference to the second or third possible implementation manner, in a fourth possible implementation manner, the communication method further includes: the SMF network element sending the stream to the access network device corresponding to the UE Bandwidth demand information.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element may send a flow bandwidth demand message to the access network device serving the UE, so that the access network device may The bandwidth requirement information reserves bandwidth resources for the stream, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

With reference to the fourth possible implementation manner, in a fifth possible implementation manner, the communication method further includes: the SMF network element receives first information from the access network device, and the first information is used for Indicates whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

For example, the SMF network element may detect whether the first information is received from the access network device before sending the second delay information to the UPF network element. If the SMF network element receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element may send the second delay information to the UPF network element; otherwise, the SMF network element may not send the UPF network element Send the second delay information.

For example, the SMF network element may detect whether the first information is received from the access network device before determining the second delay according to the first delay and the third delay. If the SMF network element receives the first information, the SMF network element may determine a second delay based on the first delay and the third delay, and perform subsequent operations; otherwise, the SMF network element may not use the first delay And the third delay determines a second delay, and no subsequent operations are performed.

For example, the SMF network element may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the SMF network element receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF network element may The third delay is not determined according to the PCC rule, and subsequent operations are not performed.

In this implementation manner, the SMF network element performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the SMF network element.

With reference to the second aspect or any one of the foregoing possible implementation manners, in a sixth possible implementation manner, the communication method further includes: the SMF network element sends the flow information to the PCF network element, and the flow The information is used for determining the PCC rule of the flow; the SMF network element receives the PCC rule from the PCF network element.

In this implementation manner, the PCC rule used by the SMF network element to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the SMF network element from the PCF network element.

The SMF network element may cache the PCC rule after obtaining the PCC rule corresponding to the flow from the PCF network element. In this way, the next time the SMF network element needs to use the PCC rule corresponding to the flow, it can be obtained directly from the SMF network element instead of from the PCF network element, which can improve efficiency.

With reference to the sixth possible implementation manner, in a seventh possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream or the priority of the stream.

That is, the SMF network element can send one or more of the above information to the PCF network element, so that the PCF network element can determine and return the corresponding PCC rule to the SMF network element based on the one or more information.

In a third aspect, the present application provides a communication method. The communication method includes: an SMF network element receives flow information from a UE; and the SMF network element determines, according to the flow information and a PCC rule of the flow, that the flow is transmitted from the UE to a user plane function UPF network element A third delay; the SMF network element sends first delay information to the UE, and the first delay information is used to indicate the third delay.

In this communication method, the SMF network element determines the third delay of the stream from the UE to the UPF network element according to the PCC rule, and indicates the third delay to the UE, so that the UE can determine the flow from the third delay according to the third delay. The cumulative delay transmitted by the UE to the UPF network element can further be used to determine the QoS of the stream can be guaranteed and the stream can be transmitted according to the cumulative delay in the communication network where the 3GPP network communicates with the TSN. It is determined that the QoS of the stream can be guaranteed, and the stream can be transmitted.

In addition, the SMF network element determines the third delay of the flow from the UE to the UPF network element according to the PCC rule, and indicates the third delay to the UE, so that the UE can determine that the flow is transmitted from the UE to the UPF network element according to the third delay. Cumulative delay of UPF network elements. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that the UPF network element A method that supports the TSN network on all transmission nodes to the UE to calculate the cumulative delay of the stream being transmitted from the UE to the UPF network element. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

Optionally, the third delay may be a maximum transmission delay of the flow transmitted from the UE to the UPF network element.

The stream information may include one or more of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a largest frame for transmitting the stream, and a The interval between frames, the priority of the flow, and the delay information transmitted by the UE from the UE to the UPF network element.

With reference to the third aspect, in a first possible implementation manner, the communication method further includes: the SMF network element determining that the bandwidth resource can be reserved for the flow according to the PCC rule.

For example, before sending delay information to the UE, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the SMF network element may send delay information to the UE; otherwise, the SMF network element may not send the time to the UE.延 信息。 Extension information.

For example, before determining the third delay according to the PCC rule, the SMF network element may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF The network element may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

In this implementation manner, the SMF network element performs subsequent related operations only when it is determined that the bandwidth resource can be reserved for the flow, which can improve the execution efficiency of the SMF network element.

With reference to the first possible implementation manner, in a second possible implementation manner, the communication method further includes: the SMF network element sending the bandwidth requirement information of the flow to the UPF network element.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element can send a flow bandwidth demand message to the UPF network element, so that the UPF network element reserves the flow for the flow according to the bandwidth demand information. Bandwidth resources, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

With reference to the first or second possible implementation manner, in a third possible implementation manner, the communication method further includes: the SMF network element sending the stream to the access network device corresponding to the UE Bandwidth demand information.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element may send a flow bandwidth demand message to the access network device serving the UE, so that the access network device may The bandwidth requirement information reserves bandwidth resources for the stream, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

With reference to the third possible implementation manner, in a fourth possible implementation manner, the communication method further includes: the SMF network element receives first information from the access network device, and the first information is used for Indicates whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

For example, the SMF network element may detect whether the first information is received from the access network device before sending the delay information to the UE. If the SMF network element receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element may send the delay information to the UE; otherwise, the SMF network element may not send the delay information to the UE.

For example, the SMF network element may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the SMF network element receives the first information, the SMF network element may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the SMF network element may not determine the third delay according to the PCC rule, and No subsequent operations are performed.

In this implementation manner, the SMF network element performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the SMF network element.

With reference to the third aspect or any one of the foregoing possible implementation manners, in a fifth possible implementation manner, the communication method further includes: the SMF network element sends the flow information to the PCF network element, and the flow The information is used for determining the PCC rule of the flow; the SMF network element receives the PCC rule from the PCF network element.

In this implementation manner, the PCC rule used by the SMF network element to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the SMF network element from the PCF network element.

The SMF network element may cache the PCC rule after obtaining the PCC rule corresponding to the flow from the PCF network element. In this way, the next time an SMF network element needs to use the PCC rules corresponding to the flow, it can be obtained directly from the SMF network element instead of from the PCF network element, which can improve efficiency.

With reference to the fifth possible implementation manner, in a sixth possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream or the priority of the stream.

That is, the SMF network element can send one or more of the above information to the PCF network element, so that the PCF network element can determine and return the corresponding PCC rule to the SMF network element based on the one or more information.

In a fourth aspect, the present application provides a communication method. The communication method includes: a UPF network element receives first delay information of a stream from a TSN, and the first delay information is used to indicate that the stream is transmitted from a stream service provider in the TSN to the UPF network element; A first delay; the UPF network element sends the first delay information to the SMF network element, the first delay information is used for determining a second delay, and the second delay is the flow slave A delay of transmission by the streaming service provider to a terminal device UE in the TSN network; the UPF network element receives second delay information from the SMF network element, and the second delay information is used to indicate The second delay; the UPF network element sends the second delay information to the UE.

In this communication method, the UPF network element obtains a second delay from the SMF network element and transmits the second delay from the UPF network element to the UE, and sends the second delay to the UE, so that the 3GPP network can communicate with the TSN. The stream is transmitted according to the second delay.

In addition, in the communication method, the third delay used to determine the second delay is determined by the SMF network element according to a PCC rule corresponding to the flow. In the prior art, clock synchronization is performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization of all nodes between the UPF network element and the UE is performed to calculate the flow from the UPF network element. Cumulative delay transmitted to the UE. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

With reference to the fourth aspect, in a first possible implementation manner, the communication method includes: the UPF network element receives the bandwidth requirement information of the stream from the SMF network element; the UPF network element according to the flow The bandwidth requirement information reserves bandwidth resources for the flow.

In this communication method, the UPF network element may reserve bandwidth resources for the stream according to the bandwidth demand information indicated by the SMF network element, so that when the stream is transmitted to the UPF network element, the UPF network element has corresponding bandwidth resources to transmit the stream. , Which can improve the reliability of stream transmission.

With reference to the fourth aspect or the first possible implementation manner, in a second possible implementation manner, the communication method further includes: the UPF network element receives first information from the SMF network element, and the first The information is used to indicate whether the access network device corresponding to the UE successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

If the UPF network element receives the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream, the UPF network element may send the second delay information to the TSN and notify the TSN that the network resource reservation is successful.

In a fifth aspect, the present application provides a communication method. The communication method includes: the UE sends flow information to an SMF network element, and the flow information is used to determine a third delay for the flow to be transmitted from the UE to a UPF network element; and the UE is sent from the SMF network element. Yuan receives first delay information, the first delay information is used to indicate the third delay; and the UE determines that the stream is transmitted from the UE to the UPF network according to the third delay The target delay of the element; the UE sends second delay information to the UPF network element, and the second delay information is used to indicate the target delay.

In this communication method, the UE obtains a third delay from the SMF network element for the stream to be transmitted from the UE to the UPF network element, and determines a target delay for the stream to be transmitted from the UE to the UPF network element according to the third delay. Perform clock synchronization between two adjacent nodes between the UE and the UPF network element, and finally achieve the clock synchronization of all nodes between the UE and the UPF network element to calculate the cumulative delay of the flow from the UE to the UPF network element Compared with the method, the scheme is simple and easy to implement.

According to a sixth aspect, the present application provides a communication method including: a UPF network element receiving first delay information of a stream from a TSN, the first delay information being used to indicate that the stream is from a stream service in the TSN A first delay transmitted by the provider to the UPF network element; the UPF network element sends flow information to the SMF network element, and the flow information is used for the first transmission of the flow from the UPF network element to the UE; Determination of three delays; the UPF network element receives third delay information from the SMF network element, and the third delay information is used to indicate the third delay; the UPF network element A time delay and the third time delay, determining a second time delay in which the stream is transmitted from the stream service provider in the TSN network to the UE; the UPF network element sends a first time Second delay information, where the second delay information is used to indicate the second delay.

In this communication method, the UPF network element transmits the third delay of the flow determined by the SMF network element from the UPF network element to the UE as the cumulative delay of the flow transmitted from the UPF network element to the UE, which is the same as the UPF network element to the UE. The clock synchronization is performed between two adjacent nodes between the two nodes, and finally the clock synchronization between all nodes between the UPF network element and the UE is achieved. Compared with the method of calculating the cumulative delay of the flow transmitted from the UPF network element to the UE, the solution is simple. ,easy to accomplish.

Optionally, the third delay may be a maximum transmission delay of the flow transmission from the UPF network element to the UE.

With reference to the sixth aspect, in a first possible implementation manner, the UPF network element determines that the flow is served from the flow in the TSN network according to the first delay and the third delay. The second delay transmitted by the provider to the UE includes: determining, by the UPF network element, the sum of the first delay and the third delay as the second delay.

With reference to the sixth aspect or the first possible implementation manner, in a second possible implementation manner, the communication method includes: the UPF network element receives the bandwidth requirement information of the stream from the SMF network element; The UPF network element reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

In this communication method, the UPF network element may reserve bandwidth resources for the stream according to the bandwidth demand information indicated by the SMF network element, so that when the stream is transmitted to the UPF network element, the UPF network element has corresponding bandwidth resources to transmit the stream. , Which can improve the reliability of stream transmission.

With reference to the sixth aspect or the first or second possible implementation manner, in a third possible implementation manner, the communication method further includes: the UPF network element receiving first information from the SMF network element, The first information is used to indicate whether the access network device corresponding to the UE successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

If the UPF network element receives the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream, the UPF network element may send the second delay information to the TSN and notify the TSN that the network resource reservation is successful.

With reference to the sixth aspect or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination of the flow Address, the size of the maximum frame that transmits the stream and the interval between the frames used to transmit the stream, the priority of the stream, the maximum allowable delay in transmitting a single frame of the stream from the Talker to the Listener, or Reliability requirements for flow.

In a seventh aspect, the present application provides a communication device. The communication device includes a receiving module, a processing module, and a sending module, and receives first delay information of a stream from a UPF network element through the receiving module, where the first delay information is used to indicate that the stream is from a TSN. A first delay of transmission by the stream service provider to the UPF network element; a third delay of transmission of the stream from the UPF network element to the UE by the processing module according to the PCC rule of the flow; The processing module determines a second delay for transmitting the stream from the stream service provider in the TSN to the UE according to the first delay and the third delay; through the sending module Sending second delay information to the UPF network element, where the second delay information is used to indicate the second delay.

The communication device determines a third delay of the flow transmission from the UPF network element to the UE according to the PCC rule, and uses the third delay as a cumulative delay of the flow transmission from the UPF network element to the UE, so that the communication device can The third delay stream and the first delay in transmitting the stream from the stream provider in the TSN to the UPF network element determine the second delay in transmitting the stream from the stream service provider in the TSN to the UE. In the communication network with the TSN, it is determined according to the second delay that the QoS of the stream can be guaranteed, and the stream can be transmitted.

In addition, the communication device determines, according to the PCC rule, a third delay in which the stream is transmitted from the UPF network element to the UE as a cumulative delay in which the stream is transmitted from the UPF network element to the UE. In the prior art, clock synchronization needs to be performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization of all nodes between the UPF network element and the UE is achieved, so that the UPF network element to the UE The TSN network is supported on all transmission nodes to calculate the cumulative delay of the flow from the UPF network element to the UE. Compared with the prior art, the communication device has a simple solution and is easy to implement.

The third delay may be a maximum transmission delay of a stream transmitted from the UPF network element to the UE.

With reference to the seven aspects, in a first possible implementation manner, the sum of the first delay and the third delay is specifically determined by the processing module as the second delay.

With reference to the seventh aspect or the first possible implementation manner, in a second possible implementation manner, it is determined by the processing module according to the PCC rule that a bandwidth resource can be reserved for the flow.

For example, before sending the second delay information to the UPF network element, the communication device may determine that the core network and the access network reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the communication device determines that it can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the communication device may send the second delay information to the UPF network element; otherwise, the communication device may not send the second delay information to the UPF network element. Two delay information.

For example, before determining the second delay according to the first delay and the third delay, the communication device may determine whether to reserve bandwidth resources for the flow according to a PCC rule corresponding to the flow. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the communication device may determine a second delay according to the first delay and the third delay, and Perform subsequent operations; otherwise, the communication device may not determine the second delay according to the first delay and the third delay, and may not perform subsequent operations.

For example, before determining the third delay according to the PCC rule, the communication device may determine whether to reserve bandwidth resources for the stream according to the PCC rule corresponding to the stream. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the communication device may determine the third delay according to the PCC rules and perform subsequent operations; otherwise, the The communication device may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

The communication device performs subsequent related operations only when it is determined that the bandwidth resource can be reserved for the flow, which can improve the execution efficiency of the communication device.

Of course, the communication device may also determine whether to reserve bandwidth resources for the stream after sending the second delay information to the UPF network element, which is not limited in this application.

With reference to the seventh aspect or the first or second possible implementation manner, in a third possible implementation manner, the sending module sends the bandwidth requirement information of the flow to the UPF network element.

The communication device sends a bandwidth demand message of a flow to a UPF network element, so that the UPF network element reserves bandwidth resources for the flow according to the bandwidth demand information, so that when the flow is transmitted to the UPF network element, the UPF network element may have Corresponding bandwidth resources are used to transmit the stream, which can further improve the transmission reliability of the stream.

Optionally, the communication device may send the bandwidth demand message of the flow to the UPF network element only after determining that the bandwidth resource can be reserved for the flow.

With reference to the seventh aspect or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the sending module sends the bandwidth requirement information of the flow to an access network device corresponding to the UE.

The access network device reserves bandwidth resources for the stream according to the bandwidth demand information, so that the access network can have corresponding bandwidth resources to transmit the stream, thereby improving the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

Optionally, the communication apparatus may send the bandwidth demand message of the flow to the access network device serving the UE only when it is determined that the bandwidth resource can be reserved for the flow.

With reference to the fourth possible implementation manner, in a fifth possible implementation manner, first information is received from the access network device through the receiving module, and the first information is used to indicate the access network device Whether the bandwidth resource reservation for the flow is successful according to the bandwidth requirement information of the flow.

For example, the communication apparatus may detect whether the first information is received from the access network device before sending the second delay information to the UPF network element. If the communication device receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the communication device may send the second delay information to the UPF network element; otherwise, the communication device may not send the UPF network element Send the second delay information.

For example, the communication device network element may detect whether the first information is received from the access network device before determining the second delay according to the first delay and the third delay. If the communication device receives the first information, the communication device may determine a second delay according to the first delay and the third delay, and perform subsequent operations; otherwise, the communication device may not use the first delay And the third delay determines a second delay, and no subsequent operations are performed.

For example, the communication apparatus may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the communication device receives the first information, the communication device may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the communication device may not determine the third delay according to the PCC rule, and No subsequent operations are performed.

The communication device performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the communication device.

Of course, the communication device may also receive the first information from the access network device after sending the second delay information to the UPF network element, which is not limited in this application.

With reference to the seventh aspect or any one of the foregoing possible implementation manners, in a sixth possible implementation manner, information about the stream is sent to a PCF network element through the sending module, and the stream information is used for the stream The determination of the PCC rules; receiving the PCC rules from the PCF network element through the receiving module.

In this implementation manner, the PCC rule used by the communication device to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the communication device from the PCF network element.

Wherein, after the communication device obtains the PCC rule corresponding to the flow from the PCF network element, the communication device may cache the PCC rule. In this way, the next time the communication device needs to use the PCC rules corresponding to the stream, it can be obtained directly from the communication device, rather than from the PCF network element, thereby improving efficiency.

With reference to the sixth possible implementation manner, in a seventh possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream, the priority of the stream, the maximum allowable delay for a single frame of the stream from the Talker to the Listener, or the reliability of the stream demand.

That is, the communication device may send one or more types of information to the PCF network element, so that the PCF network element may determine and return the corresponding PCC rule to the SMF network element according to the one or more types of information.

Each module included in the communication apparatus in the seventh aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be an SMF network element.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in an SMF network element.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In an eighth aspect, the present application provides a communication device. The communication device includes a receiving module, a processing module, and a sending module; and, receiving the first delay information of the stream from the UE through the receiving module, where the first delay information is used to indicate the first delay; The PCC rule of the flow determines a third delay in which the flow is transmitted from the UE to the UPF network element; and the processing module determines the flow to be transmitted from the UE according to the first delay and the third delay. A second delay to the UPF network element; and sending second delay information to the UPF network element through a sending module, where the second delay information is used to indicate the second delay.

The communication device receives first delay information from the UE, and learns the first delay determined by the UE and the stream is transmitted from the UE to the UPF network element according to the first delay information. In addition, the communication device determines the flow delay from the PCC rule. The third delay transmitted by the UE to the UPF network element, and then adjusting the first delay determined by the UE and the third delay determined by the communication device, so as to obtain the second delay of the stream transmitted from the UE to the UPF network element , And further, it can be determined that the QoS of the stream can be guaranteed and the stream can be transmitted according to the second delay in the interworking communication network between the 3GPP network and the TSN.

In addition, the communication device determines the cumulative delay of the stream from the UE to the UPF network element according to the third delay of the stream being transmitted from the UE to the UPF network element and the first delay determined by the UE. In the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that the UPF network element reaches the UE. The TSN network is supported on all transmission nodes in order to calculate the cumulative delay of the stream transmission from the UE to the UPF network element. Compared with the prior art, the communication device has a simple solution and is easy to implement.

Optionally, the third delay may be a maximum transmission delay of the flow transmitted from the UE to the UPF network element.

With reference to the eighth aspect, in a first possible implementation manner, specifically adding the first delay and the third delay through the processing module, and subtracting the stream from the UE transmitting to The value obtained by using the default value of the transmission delay of the UPF network element is determined as the second delay.

An example of a default value of a transmission delay of a stream transmitted from the UE to the UPF network element is 500 nanoseconds (nm). That is, the first delay may be added to the third delay, and a value obtained by subtracting 500 nm may be determined as the second delay.

With reference to the eighth aspect or the first possible implementation manner, in a second possible implementation manner, it is determined by the processing module according to the PCC rule that a bandwidth resource can be reserved for the flow.

For example, before sending the second delay information to the UPF network element, the communication device may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the communication device may send the second delay information to the UPF network element; otherwise, the communication device may not The UPF network element sends the second delay information.

For example, before determining the second delay according to the first delay and the third delay, the communication device may determine whether to reserve bandwidth resources for the flow according to a PCC rule corresponding to the flow. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow, the communication device may determine a second delay according to the first delay and the third delay, and Perform subsequent operations; otherwise, the communication device may not determine the second delay according to the first delay and the third delay, and may not perform subsequent operations.

For example, before determining the third delay according to the PCC rule, the communication device can determine whether to reserve bandwidth resources for the stream according to the PCC rule corresponding to the stream. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the communication device may determine the third delay according to the PCC rules and perform subsequent operations; otherwise, the The communication device may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

In this implementation manner, the communication device performs subsequent related operations only when it is determined that the bandwidth resources can be reserved for the flow, which can improve the execution efficiency of the communication device.

With reference to the second possible implementation manner, in a third possible implementation manner, the bandwidth requirement information of the flow is sent to the UPF network element through the sending module.

In other words, if the communication device determines that the bandwidth resource can be reserved for the flow, the communication device can send a bandwidth demand message of the flow to the UPF network element, so that the UPF network element reserves the bandwidth resource for the flow according to the bandwidth demand information, thereby When the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

With reference to the second or third possible implementation manner, in a fourth possible implementation manner, the bandwidth requirement information of the flow is sent to the access network device corresponding to the UE through the sending module.

That is, in a case where the communication apparatus determines that a bandwidth resource can be reserved for a stream, the communication apparatus may send a stream bandwidth requirement message to an access network device serving the UE, so that the access network device may The bandwidth requirement information reserves bandwidth resources for the stream, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

With reference to the fourth possible implementation manner, in a fifth possible implementation manner, first information is received from the access network device through the receiving module, and the first information is used to indicate the access network device Whether the bandwidth resource reservation for the flow is successful according to the bandwidth requirement information of the flow.

For example, the communication apparatus may detect whether the first information is received from the access network device before sending the second delay information to the UPF network element. If the communication device receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the communication device may send the second delay information to the UPF network element; otherwise, the communication device may not send the UPF network element Send the second delay information.

For example, the communication apparatus may detect whether the first information is received from the access network device before determining the second delay according to the first delay and the third delay. If the communication device receives the first information, the communication device may determine a second delay according to the first delay and the third delay, and perform subsequent operations; otherwise, the communication device may not use the first delay And the third delay determines a second delay, and no subsequent operations are performed.

For example, the communication apparatus may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the communication device receives the first information, the communication device may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the communication device may not determine the third delay according to the PCC rule, and No subsequent operations are performed.

In this implementation manner, the communication device performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the SMF network element.

With reference to the eighth aspect or any one of the foregoing possible implementation manners, in a sixth possible implementation manner, information about the flow is sent to a PCF network element through a sending module, and the flow information is used for the flow. Determination of a PCC rule; the SMF network element receives the PCC rule from the PCF network element.

In this implementation manner, the PCC rule used by the communication device to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the communication device from the PCF network element.

Wherein, after the communication device obtains the PCC rule corresponding to the flow from the PCF network element, the communication device may cache the PCC rule. In this way, the next time the communication device needs to use the PCC rules corresponding to the stream, it can be obtained directly from the communication device, rather than from the PCF network element, thereby improving efficiency.

With reference to the sixth possible implementation manner, in a seventh possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream or the priority of the stream.

That is, the communication device may send the one or more types of information to the PCF network element, so that the PCF network element may determine and return the corresponding PCC rule to the communication device according to the one or more types of information.

Each module included in the communication device in the eighth aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be an SMF network element.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in an SMF network element.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In a ninth aspect, the present application provides a communication device. The communication device includes a receiving module, a processing module, and a sending module; and, receiving the flow information from the UE through the receiving module; and determining, by the processing module, the flow from The third delay transmitted by the UE to the user plane function UPF network element is sent to the UE through the sending module, and the first delay information is used to indicate the third delay.

The communication device determines a third delay of the flow from the UE to the UPF network element according to the PCC rule, and indicates the third delay to the UE, so that the UE can determine that the flow is transmitted from the UE to the UPF network according to the third delay. The cumulative delay of the element can be further determined based on the cumulative delay in the communication network of the 3GPP network and the TSN interworking. The QoS of the stream can be guaranteed and the stream can be transmitted. It is determined that the QoS of the stream can be guaranteed, and the stream can be transmitted.

In addition, the communication device determines a third delay in transmitting the stream from the UE to the UPF network element according to the PCC rule, and indicates the third delay to the UE, so that the UE can determine that the stream is transmitted from the UE to the UPF network element according to the third delay. Cumulative delay of UPF network elements. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that all the signals from the UPF network element to the UE are synchronized. The TSN network is supported on the transmission node to calculate the cumulative delay of the stream from the UE to the UPF network element. Compared with the prior art, the communication device has a simple solution and is easy to implement.

Optionally, the third delay may be a maximum transmission delay of the flow transmitted from the UE to the UPF network element.

The stream information may include one or more of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a largest frame for transmitting the stream, and a The interval between frames, the priority of the flow, and the delay information transmitted by the UE from the UE to the UPF network element.

With reference to the ninth aspect, in a first possible implementation manner, the processing module determines that a bandwidth resource can be reserved for the flow according to the PCC rule.

For example, before sending the delay information to the UE, the communication device may determine whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the communication device may send delay information to the UE; otherwise, the communication device may not send the time to the UE.延 信息。 Extension information.

For example, before determining the third delay according to the PCC rule, the communication device may determine whether to reserve bandwidth resources for the stream according to the PCC rule corresponding to the stream. If the communication device determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, the communication device may determine the third delay according to the PCC rules and perform subsequent operations; otherwise, the The communication device may not determine the third delay according to the PCC rule, and may not perform subsequent operations.

In this implementation manner, the communication device executes subsequent related operations only when it is determined that the bandwidth resource can be reserved for the stream, which can improve the execution efficiency of the communication device.

With reference to the first possible implementation manner, in the second possible implementation manner, the bandwidth requirement information of the flow is sent to the UPF network element through the sending module.

That is, in a case where the communication device determines that a bandwidth resource can be reserved for a flow, the communication device may send a flow bandwidth demand message to a UPF network element, so that the UPF network element reserves the flow according to the bandwidth demand information. Bandwidth resources, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

With reference to the first or second possible implementation manner, in a third possible implementation manner, the bandwidth requirement information of the flow is sent to the access network device corresponding to the UE through the sending module.

That is, in a case where the communication apparatus determines that a bandwidth resource can be reserved for a stream, the communication apparatus may send a stream bandwidth requirement message to an access network device serving the UE, so that the access network device may The bandwidth requirement information reserves bandwidth resources for the stream, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

It should be understood that, in this implementation manner, the access network device corresponding to the UE refers to a device that provides access network services for the UE.

With reference to the third possible implementation manner, in a fourth possible implementation manner, first information is received from the access network device through the receiving module, and the first information is used to indicate the access network device Whether the bandwidth resource reservation for the flow is successful according to the bandwidth requirement information of the flow.

For example, the communication apparatus may detect whether the first information is received from the access network device before sending the delay information to the UE. If the communication device receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the communication device may send delay information to the UE; otherwise, the communication device may not send the delay information to the UE.

For example, the communication apparatus may detect whether the first information is received from the access network device before determining the third delay according to a PCC rule. If the communication device receives the first information, the communication device may determine the third delay according to the PCC rule and perform subsequent operations; otherwise, the communication device may not determine the third delay according to the PCC rule, and No subsequent operations are performed.

In this implementation manner, the communication device performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the communication device.

With reference to the ninth aspect or any one of the foregoing possible implementation manners, in a fifth possible implementation manner, information about the stream is sent to a PCF network element through the sending module, and the stream information is used for the stream The determination of the PCC rules; receiving the PCC rules from the PCF network element through the receiving module.

In this implementation manner, the PCC rule used by the communication device to determine the third delay or to determine whether the UPF network element can reserve bandwidth resources for the flow is obtained by the communication device from the PCF network element.

Wherein, after the communication device obtains the PCC rule corresponding to the flow from the PCF network element, the communication device may cache the PCC rule. In this way, the next time the communication device needs to use the PCC rules corresponding to the stream, it can be obtained directly from the communication device, rather than from the PCF network element, thereby improving efficiency.

With reference to the fifth possible implementation manner, in a sixth possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address and a destination address of the flow, and transmitting the The size of the maximum frame of a stream and the interval between frames used to transmit the stream or the priority of the stream.

That is, the communication device may send the one or more types of information to the PCF network element, so that the PCF network element may determine and return the corresponding PCC rule to the communication device according to the one or more types of information.

Each module included in the communication apparatus in the ninth aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be an SMF network element.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in an SMF network element.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In a tenth aspect, the present application provides a communication device. The communication device includes a receiving module and a sending module; and receiving first delay information of a stream from a TSN through the receiving module, where the first delay information is used to instruct the stream to provide a stream service from the TSN. Transmitting the first delay to the UPF network element; sending the first delay information to the SMF network element through the sending module, where the first delay information is used for determining a second delay, and The second delay is a delay in which the stream is transmitted from the stream service provider in the TSN network to a terminal device UE; and receiving second delay information from the SMF network element through the receiving module, the The second delay information is used to indicate the second delay; and the second delay information is sent to the UE through the sending module.

The communication device obtains a second delay from the SMF network element for transmitting a stream from the UPF network element to the UE, and sends the second delay to the UE, so that the communication device can communicate with the 3GPP network and the TSN based on the second The stream is transmitted with a delay.

In addition, the third delay used in the communication device to determine the second delay is determined by the SMF network element according to a PCC rule corresponding to the flow. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization between all nodes between the UPF network element and the UE is realized, so that the calculation flow is transmitted from the UPF network element to the The cumulative delay of the UE. Compared with the prior art, the communication device has a simple solution and is easy to implement.

The third delay may be a maximum transmission delay of a stream transmitted from the UPF network element to the UE.

With reference to the tenth aspect, in a first possible implementation manner, the bandwidth requirement information of the stream is received from the SMF network element through the receiving module; wherein the communication device further includes a processing module, and passes through the receiving module. The processing module reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

The communication device may reserve bandwidth resources for the stream according to the bandwidth requirement information indicated by the SMF network element, so that when the stream is transmitted to the UPF network element, the communication device has corresponding bandwidth resources to transmit the stream, thereby improving the stream ’s performance. Transmission reliability.

With reference to the tenth aspect or the first possible implementation manner, in a second possible implementation manner, first information is received from the SMF network element through the receiving module, and the first information is used to indicate the UE Whether the corresponding access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

If the communication device receives the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream, the communication device may send the second delay information to the TSN and notify the TSN that the network resource reservation is successful.

Each module included in the communication device in the tenth aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be a UPF network element.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in a UPF network element.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In an eleventh aspect, the present application provides a communication device. The communication device includes a sending module, a receiving module, and a processing module; and sending the flow information to the SMF network element through the sending module, where the flow information is used for transmitting the flow from the UE to the UPF network element. Determination of three delays; receiving first delay information from the SMF network element through the receiving module, the first delay information used to indicate the third delay; and using the processing module according to the first Three time delays, determining a target time delay for transmitting the stream from the UE to the UPF network element; and sending second delay information to the UPF network element through the sending module, where the second time delay information is used to indicate The target delay.

The communication device obtains a third delay from the SMF network element for the stream to be transmitted from the UE to the UPF network element, and determines a target delay for the stream to be transmitted from the UE to the UPF network element according to the third delay. The clock synchronization is performed between two adjacent nodes between the UPF network elements, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, and the method of calculating the cumulative delay of the stream from the UE to the UPF network element is calculated. Compared, the scheme is simple and easy to implement.

The third delay may be the maximum transmission delay of the flow from the UE to the UPF network element.

Each module included in the communication device in the eleventh aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be a UE.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in a UE.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In a twelfth aspect, the present application provides a communication device including a receiving module, a sending module, and a processing module; and receiving first stream delay information from a TSN through the receiving module, the first delay The information is used to indicate a first delay in transmitting the stream from the stream service provider in the TSN to the UPF network element; and sending the stream information to the SMF network element through the sending module, and the stream information is used for all Determining the third delay of the stream being transmitted from the UPF network element to the UE; receiving third delay information from the SMF network element through the processing module, the third delay information used to indicate the first delay Three delays; determining, by the processing module, a second time at which the stream is transmitted from the stream service provider in the TSN network to the UE according to the first delay and the third delay Delay; sending second delay information to the UE through the sending module, where the second delay information is used to indicate the second delay.

The communication device transmits the third delay of the stream determined by the SMF network element from the UPF network element to the UE as the cumulative delay of the stream transmitted from the UPF network element to the UE, which is two or two phases between the UPF network element and the UE. Neighboring nodes do clock synchronization, and finally achieve the clock synchronization of all nodes between the UPF network element and the UE. Compared with the method of calculating the cumulative delay of the flow transmitted from the UPF network element to the UE, the solution is simple and easy to implement.

The third delay may be a maximum transmission delay of the flow transmission from the UPF network element to the UE.

With reference to the twelfth aspect, in a first possible implementation manner, the sum of the first delay and the third delay is specifically determined by the processing module as the second delay.

With reference to the twelfth aspect or the first possible implementation manner, in a second possible implementation manner, the bandwidth requirement information of the stream is received from the SMF network element by the receiving module; The bandwidth requirement information of the flow reserves bandwidth resources for the flow.

The communication device may reserve bandwidth resources for the stream according to the bandwidth requirement information indicated by the SMF network element, so that when the stream is transmitted to the communication device, the communication device has corresponding bandwidth resources to transmit the stream, thereby improving the transmission of the stream reliability.

With reference to the twelfth aspect or the first or second possible implementation manner, in a third possible implementation manner, first information is received from the SMF network element through the receiving module, and the first information is used It indicates whether the access network device corresponding to the UE successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

If the communication device receives the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream, the communication device may send the second delay information to the TSN and notify the TSN that the network resource reservation is successful.

With reference to the twelfth aspect or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the flow information includes at least one of the following: an identification ID of the flow, a source address of the flow, and The destination address, the size of the maximum frame that transmits the stream and the interval between frames used to transmit the stream, the priority of the stream, the maximum allowable delay for a single frame of the stream from the Talker to the Listener, or The reliability requirements of the stream.

Each module included in the communication device in the twelfth aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be a UPF network element.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip capable of being integrated in a UPF network element.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In a thirteenth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores program code for execution by a communication device. The program code includes instructions for executing a communication method in any one of the first to sixth aspects or in any one of the possible implementation manners of any one of the aspects.

In a fourteenth aspect, the present application provides a computer program product containing instructions. When the computer program product runs on a communication device, the communication device is caused to execute the communication method in any one of the first to sixth aspects or in any one of the possible implementation manners of any one of the aspects.

In a fifteenth aspect, the present application provides a communication method including: an SMF network element receiving first delay information of a stream from a first communication device, where the first delay information is used to instruct the stream from A first delay for a stream service provider in the TSN to transmit to the first communication device; the SMF network element determines that the stream is transmitted from the first communication device to the second communication device according to the PCC rule of the flow The first target delay; the SMF network element determines that the stream is transmitted from the stream service provider to the TSN according to the first delay, the first target delay, and the second target delay A third delay in the target network element that is the next hop of the second communication device, the second target delay is a delay in which the stream is transmitted from the second communication device to the target network element ; The SMF network element sends third delay information to the first communication device, and the third delay information is used to indicate the third delay; wherein the first communication device is a UPF network element and The second communication device is a UE, or the first communication device is the UE and the second communication device is The communication device is the UPF network element.

This communication method can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the next hop of the second communication device in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication method This makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In a possible implementation manner, the SMF network element determines the third delay according to the first delay, the first target delay, and the second target delay, including: the SMF network element will A sum of the first delay, the first target delay, and the second target delay is used as the third delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

In a possible implementation manner, the communication method further includes that the SMF network element determines that the bandwidth resource can be reserved for the flow according to the PCC rule.

In a possible implementation manner, the communication method further includes: sending, by the SMF network element, the bandwidth requirement information of the flow to the UPF network element.

In a possible implementation manner, the communication method further includes: sending, by the SMF network element, the bandwidth requirement information of the stream to an access network device corresponding to the UE.

In a possible implementation manner, the communication method further includes: the SMF network element receiving first information from the access network device, where the first information is used to instruct the access network device according to the The bandwidth requirement information of the flow is whether the bandwidth resource reservation of the flow is successful.

In a possible implementation manner, the communication method further includes: the SMF network element sends the flow information to the PCF network element, and the flow information is used for determining a PCC rule of the flow; the The SMF network element receives the PCC rule from the PCF network element.

For the communication method in the fifteenth aspect, reference may be made to the steps performed by the SMF network element in the communication method described in FIG. 24 or FIG. 30.

In a sixteenth aspect, the present application provides a communication method including: an SMF network element receiving first delay information of a stream from a UPF network element or a UE, where the first delay information is used to indicate the stream A first delay transmitted from a stream service provider in a TSN to a first communication device; the SMF network element determines a first transmission of the stream between the UPF network element and the UE according to a PCC rule of the stream Target delay; the SMF network element determines, based on the first delay and the first target delay, that the stream is transmitted from the stream service provider in the TSN to the second of the second communication device Time delay; the SMF network element sends second time delay information to the UPF network element or the UE, the second time delay information is used to indicate the second time delay; wherein the first communication device Is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network element.

The communication method can obtain the cumulative delay of the stream transmitted from the stream service provider to the second communication device as the output port in 3GPP, so that the second communication device can calculate the transmission path from the stream service provider to the TSN according to the accumulated delay. The total delay of the target network element as the next hop of the second communication device in the medium, and the method of obtaining the accumulated delay is relatively simple, because the communication method makes the UE, the UPF network element, and the UE and the UPF network element unnecessary. Each device is synchronized with the main clock source, and the cumulative delay can also be calculated.

In a possible implementation manner, the determining, by the SMF network element, the second delay according to the first delay and the first target delay includes: combining the first delay and the first delay. The sum of the target delays is used as the second delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

In a possible implementation manner, the communication method further includes that the SMF network element determines that the bandwidth resource can be reserved for the flow according to the PCC rule.

In a possible implementation manner, the communication method further includes: the SMF network element sending the bandwidth requirement information of the flow to the UPF network element.

In a possible implementation manner, the communication method further includes: sending, by the SMF network element, the bandwidth requirement information of the stream to an access network device corresponding to the UE.

In a possible implementation manner, the communication method further includes: the SMF network element receiving first information from the access network device, where the first information is used to instruct the access network device according to the The bandwidth requirement information of the flow is whether the bandwidth resource reservation of the flow is successful.

In a possible implementation manner, the communication method further includes: the SMF network element sends the flow information to the PCF network element, and the flow information is used for determining a PCC rule of the flow; the The SMF network element receives the PCC rule from the PCF network element.

For the communication method in the sixteenth aspect, reference may be made to the steps performed by the SMF network element in the communication method described in FIG. 20, FIG. 22, FIG. 26, FIG. 28, FIG. 32, or FIG. 33.

In a seventeenth aspect, this application provides a communication method. The communication method includes: a UPF network element receiving first delay information of a stream from a TSN, where the first delay information is used to instruct the stream from the TSN The first delay that a streaming service provider transmits to the UPF network element; the UPF network element sends the flow information to the SMF network element, and the flow information is used for a quality of service parameter corresponding to the flow Determination; the UPF network element receives the quality of service parameter from the SMF network element; the UPF network element determines a first transmission of the stream from the UPF network element to the UE according to the quality of service parameter Target delay; the UPF network element determines a second delay according to the first delay and the first target delay, the second delay refers to the transmission of the stream from the stream service provider A delay to the UE; the UPF network element sends second delay information to the UE, where the second delay information is used to indicate the second delay.

This communication method can obtain the cumulative delay of the stream transmitted from the stream service provider to the UE serving as the output port in 3GPP, so that the UPF network element can calculate the route from the stream service provider to the TSN as the UPF network based on the cumulative delay The total delay of the target network element of the next hop of the element, and the method of obtaining the accumulated delay is relatively simple, because this communication method does not require the UE, the UPF network element, and each device between the UE and the UPF network element. You can also calculate the cumulative delay by synchronizing with the main clock source.

In a possible implementation manner, the determining, by the UPF network element according to the first delay and the first target delay, a second delay includes: combining the first delay with the first target delay. The sum of the delays is used as the second delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

In a possible implementation manner, the communication method includes: the UPF network element receives the bandwidth requirement information of the flow from the SMF network element; and the UPF network element provides the required bandwidth according to the bandwidth requirement information of the flow. These flows reserve bandwidth resources.

In a possible implementation manner, the communication method further includes that the UPF network element receives first information from the SMF network element, and the first information is used to instruct an access network device corresponding to the UE to The bandwidth requirement information of the flow is whether the bandwidth resource reservation of the flow is successful.

For the communication method in the seventeenth aspect, reference may be made to the steps performed by the UPF network element in the communication method described in FIG. 23.

In an eighteenth aspect, the present application provides a communication method including: a UPF network element receiving first delay information of a stream from a TSN or a UE, where the first delay information is used to instruct the stream from The first delay transmitted by the stream service provider in the TSN to the first communication device; the UPF network element sends the stream information to the SMF network element, and the stream information is used for the quality of service corresponding to the stream Determining the parameters; the UPF network element receiving a quality of service parameter corresponding to the flow from the SMF network element; the UPF network element determining a first target delay according to the quality of service parameter corresponding to the flow, the first The target delay refers to a delay in which the stream is transmitted between the terminal device UE and the UPF network element; the UPF network element is based on the first delay, the first target delay, and the second target time Delay, determining a third delay, the second target delay refers to a delay in which the stream is transmitted from a second communication device to a target network element that is a next hop of the second communication device in the TSN network , The third delay means that the stream is transmitted from the stream service provider to the target network The UPF network element sends third delay information, the third delay information is used to indicate the third delay; wherein the first communication device is the UPF network element and the The second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network element.

This communication method can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the next hop of the second communication device in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication method This makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In a possible implementation manner, the UPF network element determines a third delay according to the first delay, the first target delay, and the second target delay, including: changing the first delay, The sum of the first target delay and the second target delay is used as the third delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

In a possible implementation manner, the communication method includes: the UPF network element receives the bandwidth requirement information of the flow from the SMF network element; and the UPF network element provides the required bandwidth according to the bandwidth requirement information of the flow. These flows reserve bandwidth resources.

In a possible implementation manner, the communication method further includes that the UPF network element receives first information from the SMF network element, and the first information is used to instruct an access network device corresponding to the UE to The bandwidth requirement information of the flow is whether the bandwidth resource reservation of the flow is successful.

For the communication method in the eighteenth aspect, reference may be made to the steps performed by the UPF network element in the communication method described in FIG. 25 or FIG. 27.

In a nineteenth aspect, the present application provides a communication method, the communication method including: a UPF network element receiving second delay information of a stream from a UE or an SMF network element, the second delay information used to indicate the flow A second delay transmitted from a streaming service provider in a time-sensitive network TSN to the UPF network element; the UPF network element determines a third delay based on the second delay and a second target delay, so The second target delay refers to a delay in transmitting the flow from the UPF network element to the target network element in the TSN network as a next hop of the UPF network element, and the third delay refers to A delay of the stream being transmitted from the streaming service provider to the target network element; the UPF network element sends a third delay information to the target network element, the third delay information is used to indicate the The third delay is described.

This communication method can not only obtain the cumulative delay of the stream transmitted from the streaming service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the cumulative delay is simpler because the communication method makes It is not necessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the accumulated delay can also be calculated.

In a possible implementation manner, the determining, by the UPF network element according to the second delay and the second target delay, a third delay includes: combining the second delay and the second target delay. The sum of the delays is used as the third delay.

In a possible implementation manner, the communication method includes: the UPF network element receives the bandwidth requirement information of the flow from the SMF network element; and the UPF network element provides the required bandwidth according to the bandwidth requirement information of the flow. These flows reserve bandwidth resources.

In a possible implementation manner, the communication method further includes that the UPF network element receives first information from the SMF network element, and the first information is used to instruct an access network device corresponding to the UE to The bandwidth requirement information of the flow is whether the bandwidth resource reservation of the flow is successful.

For the communication method in the nineteenth aspect, reference may be made to the steps performed by the UPF network element in the communication method described in FIG. 26, FIG. 28, FIG. 29, or FIG. 33.

In a twentieth aspect, the present application provides a communication method, the communication method comprising: the UE receiving second delay information of a stream from an SMF network element or a UPF network element, where the second delay information is used to indicate the flow A second delay transmitted from the streaming service provider in the TSN to the UE; the UE determines a third delay according to the second delay and a second target delay, and the second target delay is Refers to a delay in transmitting the stream from the UE to the target network element in the TSN network as the next hop of the UE, and the third delay refers to the stream transmitting from the stream service provider A delay to the target network element; the UE sends third delay information to the target network element, and the third delay information is used to indicate the third delay.

This communication method can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is relatively simple, because the communication method makes it unnecessary Each device between the UE, the UPF network element, and the UE and the UPF network element is synchronized with the main clock source, and the accumulated delay can also be calculated.

In a possible implementation manner, the determining, by the UE according to the second delay and the second target delay, a third delay includes: combining the second delay with the second target delay. And as the third delay.

For the communication method in the twentieth aspect, reference may be made to steps performed by the UE in the communication method described in FIG. 20, FIG. 22, FIG. 23, or FIG. 32.

In a twenty-first aspect, the present application provides a communication method. The communication method includes: UE receiving first delay information of a flow, where the first delay information is used to instruct the flow from a time-sensitive network TSN. The first delay transmitted by the stream service provider to the first communication device; the UE sends the stream information to the session management function SMF network element, and the stream information is used to determine a quality of service parameter corresponding to the stream The UE receives a quality of service parameter corresponding to the flow from the SMF network element, and the UE determines a first target delay according to the quality of service parameter corresponding to the flow, where the first target delay refers to the A delay of the flow transmission between the UE and a user plane function UPF network element; the UE determines a third delay according to the first delay, the first target delay, and the second target delay, The second target delay refers to a delay in transmitting the stream from a second communication device to a target network element that is a next hop of the second communication device in the TSN network. The third delay is Refers to the delay in transmitting the stream from the stream service provider to the target network element Sending, by the UE, third delay information, where the third delay information is used to indicate the third delay; wherein the first communication device is the UPF network element and the second communication device is all The UE, or the first communication device is the UE and the second communication device is the UPF network element.

This communication method can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the next hop of the second communication device in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication method This makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In a possible implementation manner, the determining, by the UE according to the first delay, the first target delay, and the second target delay, a third delay includes: changing the first delay, The sum of the first target delay and the second target delay is used as the third delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

For the communication method in the twenty-first aspect, reference may be made to steps performed by the UE in the communication method described in FIG. 21 or FIG. 31.

In a twenty-second aspect, this application provides a communication method. The communication method includes: UE receiving first delay information of a stream, where the first delay information is used to indicate that the stream is provided from a stream service in a TSN. The first delay transmitted from the user to the UE; the UE sends the flow information to the SMF network element, and the flow information is used to determine a quality of service parameter corresponding to the flow; The SMF network element receives a quality of service parameter corresponding to the flow; the UE determines a first target delay according to the quality of service parameter corresponding to the flow, where the first target delay refers to the flow between the UE and the user Delay between transmissions of UPF network elements; the UE determines a second delay according to the first delay and the first target delay, where the second delay refers to the flow from The time delay transmitted by the streaming service provider to the UPF network element; the UE sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay.

This communication method can obtain the cumulative delay of the stream from the stream service provider to the UPF network element in 3GPP as the output port, so that the UPF network element can calculate the route from the stream service provider to the TSN based on the accumulated delay as The total delay of the target network element of the next hop of the UPF network element, and the method of obtaining the accumulated delay is relatively simple, because the communication method eliminates the need for the UE, the UPF network element, and each The devices are synchronized with the main clock source, and the accumulated delay can also be calculated.

In a possible implementation manner, the determining, by the UE, a second delay according to the first delay and the first target delay includes: determining a sum of the first delay and the first target delay. Is the second time delay.

In a possible implementation manner, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

For the communication method in the twenty-second aspect, reference may be made to steps performed by the UE in the communication method described in FIG. 29.

In a twenty-third aspect, the present application provides a communication device including a module for implementing the communication method in any one of the fifteenth aspect to the twenty-second aspect.

Each module included in the communication device in the twenty-third aspect may be implemented by software and / or hardware.

For example, the receiving module may be a receiver, the transmitting module may be a transmitter, and the processing module may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver. In this case, the communication device may be an SMF network element, a UPF network element, or a terminal device.

As another example, the processing module may be a processor, and the receiving module and the sending module may be communication interfaces. In this case, the communication device may be a chip, for example, a chip that can be integrated in an SMF network element, a UPF network element, or a UE.

Optionally, the communication device may further include a memory for storing program code executed by the processor.

In a twenty-fourth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores program code for execution by a communication device. The program code includes instructions for executing the communication method in any one of the fifteenth aspect to the twenty-second aspect or in any one of the possible implementation manners of any one of the aspects.

In a twenty-fifth aspect, the present application provides a computer program product containing instructions. When the computer program product runs on a communication device, the communication device is caused to perform communication in any one of the fifteenth to twenty-second aspects or in any one of the possible implementation manners of the any one of the aspects. method.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an application scenario in which a communication method according to an embodiment of the present application can be applied; FIG.

2 is a schematic flowchart of a communication method according to an embodiment of the present application;

3 is a schematic flowchart of a communication method according to another embodiment of the present application;

4 is a schematic flowchart of a communication method according to another embodiment of the present application;

5 is a schematic flowchart of a communication method according to another embodiment of the present application;

6 is a schematic flowchart of a communication method according to another embodiment of the present application;

7 is a schematic flowchart of a communication method according to another embodiment of the present application;

8 is a schematic flowchart of a communication method according to another embodiment of the present application;

FIG. 9 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

FIG. 10 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

11 is a schematic flowchart of a communication method according to another embodiment of the present application;

FIG. 12 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

13 is a schematic flowchart of a communication method according to another embodiment of the present application;

14 is a schematic flowchart of a communication method according to another embodiment of the present application;

15 is a schematic flowchart of a communication method according to another embodiment of the present application;

16 is a schematic flowchart of a communication method according to another embodiment of the present application;

17 is a schematic flowchart of a communication method according to another embodiment of the present application;

18 is a schematic structural diagram of a communication device according to an embodiment of the present application;

19 is a schematic diagram of an application scenario in which a communication method according to an embodiment of the present application can be applied;

20 is a schematic flowchart of a communication method according to another embodiment of the present application;

21 is a schematic flowchart of a communication method according to another embodiment of the present application;

22 is a schematic flowchart of a communication method according to another embodiment of the present application;

23 is a schematic flowchart of a communication method according to another embodiment of the present application;

FIG. 24 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

25 is a schematic flowchart of a communication method according to another embodiment of the present application;

26 is a schematic flowchart of a communication method according to another embodiment of the present application;

27 is a schematic flowchart of a communication method according to another embodiment of the present application;

FIG. 28 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

FIG. 29 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

FIG. 30 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

FIG. 31 is a schematic flowchart of a communication method according to another embodiment of the present application; FIG.

32 is a schematic flowchart of a communication method according to another embodiment of the present application;

FIG. 33 is a schematic flowchart of a communication method according to another embodiment of the present application.

detailed description

The technical solutions in this application will be described below with reference to the drawings.

As shown in FIG. 1, an application scenario in which the communication method of the embodiment of the present application can be applied may include UE 101, access network (AN) device 102, UPF network element 103, and access and mobility management functions (access and mobility management (AMF) network element 104, SMF network element 105, PCF network element 106, and TSN 107.

Communication system shown in FIG. 1 may be a fifth-generation (5 ^th generation, 5G) communication network.

The UE may also be called a terminal device. The terminal device can communicate with one or more core networks (CN) via the AN device. The terminal device may be referred to as an access terminal, a terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless network device, a user agent, or a user device. Terminals can be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital processing (personal digital assistant, PDA), handheld with wireless communication capabilities Devices, computing devices or other devices connected to wireless modems, in-vehicle devices, wearable devices or the Internet of Things, terminal devices in vehicle networks, and any form of terminal device in future networks.

The AN device may be a radio access network (RAN) device. An example of a RAN device is a base station (BS).

A base station, also known as a base station device, is a device that connects a terminal to a wireless network, including but not limited to: transmission reception point (TRP), 5G Node B (gNB), and evolved Node B ( evolved node (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), Home base station (for example, home nodeB, or home nodeB, HNB), baseband unit (BBU), or Wifi access point (AP), or small base station equipment (pico).

It should be understood that the specific types of base stations are not limited herein. In systems with different wireless access technologies, the names of base station-capable devices may vary. For convenience of description, in all embodiments of the present application, the above-mentioned devices that provide wireless communication functions for terminals are collectively referred to as base stations.

UPF network elements have functions such as packet forwarding, encapsulation, and statistics for terminal devices.

The AMF network element is responsible for the access and mobility management of the terminal equipment. For example, it is responsible for UE location update, UE registration network, or UE handover.

The SMF network element is responsible for the selection and reselection of UPF network elements, the allocation of Internet protocol (IP) addresses, etc., and may also be responsible for the establishment, modification, and release of sessions.

PCF network elements are used to implement functions including a unified policy framework for managing network behavior, providing control planes with policy rules to be executed, and obtaining subscription information related to policy decisions.

TSN has controlled constraints such as delay, jitter, bandwidth, and reliability. TSN can meet the requirements of bounded end-to-end delay and jitter and high reliability in any case.

It should be understood that the embodiments of the present application are not limited to the system architecture shown in FIG. 1. For example, a communication system to which the communication method of the embodiment of the present application can be applied may include more or fewer network elements or devices. The device or network element in FIG. 1 may be hardware, software divided by functions, or a combination of the two. The devices or network elements in FIG. 1 can communicate with each other through other devices or network elements.

In the communication system shown in FIG. 1, the UE may serve as a stream service receiver and receive a stream sent from a stream service provider of the TSN; or, the UE may serve as a stream service provider and send a stream to the stream service receiver in the TSN.

Among them, the UPF network element, as the boundary between the TSN and the 3GPP network, can have the basic functions of a bridge in the TSN. For example, the UPF network element can process Stream Reservation Protocol (Stream Reservation Protocol, SRP) messages from the TSN.

For example, the UE may receive a URLLC stream sent from a streaming service provider in the TSN, or the UE may send a URLLC stream to a streaming service recipient in the TSN.

The flows involved in the embodiments of the present application may be quality of service (QoS) flows. The QoS flow may be a QoS flow with deterministic transmission requirements.

A schematic flowchart of a communication method according to an embodiment of the present application is shown in FIG. 2. It should be understood that FIG. 2 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 2.

S201. The UPF network element receives the first delay information of the flow from the TSN, and the first delay information is used to indicate the first delay of the flow from the stream service provider in the TSN to the UPF network element. In other words, the first delay is the accumulated delay (AccumulatedLatency) of the flow transmitted from the stream service provider in the TSN to the UPF network element.

The stream service provider refers to a host or a server that provides the stream, and is a source of the stream.

The UPF network element may be the UPF network element 103 in FIG. 1, and the TSN may be the TSN 107 in FIG. 1.

The first delay information may be carried in a Talk Advertisement (Declaration) message of the streaming service provider. The streaming service provider broadcast announcement message can be used to broadcast the QoS requirements corresponding to the stream.

In addition to the first delay information, the broadcast announcement message of the stream service provider may also carry a stream identity (stream identity). In addition, the broadcast service broadcast announcement message can also carry one or more of the following information: destination address (destination_address), source address (source_address), maximum frame size (MaxFrameSize), maximum frame interval (MaxIntervalFrames), frame The priority (PriorityAndRank), the maximum allowable delay in transmitting a single frame of a stream from the Talker to the Listener, the reliability requirement of the stream, or the reason for the failure of resource reservation (FailureInformation).

S202. The UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element.

The SMF network element may be the SMF network element 105 in FIG. 1.

The UPF network element may forward the broadcast service broadcast message it receives from the TSN to the SMF network element. The streaming service provider broadcast announcement message carries first delay information.

Of course, the UPF network element may also obtain the first delay information from the broadcast service provider broadcast announcement message, and then send the first delay information to the SMF network element in other messages. This embodiment of the present application does not limit the manner in which the UPF network element sends the first delay information to the SMF network element.

S203. The SMF network element determines, according to the PCC rule of the flow, a third delay in transmitting the flow from the UPF network element to the UE.

The UE may be UE 101 in FIG. 1. The third delay may be a maximum transmission delay of the flow transmission from the UPF network element to the UE.

The PCC rules are rules related to policies and charging.

For example, the SMF network element determines the 5G QoS identifier (5G QoS identifier) corresponding to the flow according to the PCC rule, and further determines the packet delay budget (PDB) between the UPF corresponding to the 5QI and the UE. The maximum transmission delay of the PDB as a stream transmitted from the UPF to the UE.

Alternatively, after receiving the flow information from the UE, the SMF network element obtains the PCC rules of the flow according to the flow information, determines the 5QI corresponding to the flow according to the PCC rules of the flow, and sends the 5QI to the UPF. The UPF determines the UPF corresponding to the 5QI according to the 5QI. And the PDB between the UE. The maximum transmission delay of the PDB as a stream transmitted from the UPF network element to the UE.

S204. The SMF network element determines the flow from the flow service provider in the TSN according to the first delay in which the flow is transmitted from the flow service provider in the TSN to the UPF network element and the third delay in which the flow is transmitted from the UPF network element to the UE. Second delay for transmission to the UE.

The SMF network element first obtains the first delay indicated by the first delay information from the first delay information, and then determines the second delay according to the first delay and the third delay.

A possible implementation manner that the SMF network element determines the second delay according to the first delay and the third delay may include: the SMF network element determines the sum of the first delay and the third delay as the first Two delays.

Of course, the SMF network element may determine the second delay according to the first delay and the third delay in other ways. For example, after the SMF network element adds the first delay to the third delay, the sum obtained by the addition may be modified (for example, a specified or default value is added, such as a processing delay of UPF convection). ) To get the second delay. The embodiment of the present application does not limit the manner of determining the second delay according to the first delay and the third delay.

S205. The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay.

For example, after the SMF network element determines the second delay, the first delay information in the broadcast service broadcast message received by the SMF network element from the UPF network element can be modified to the second delay information, so that the streaming service can be modified. The first delay recorded in the provider broadcast announcement message is modified to the second delay. Then, the SMF network element may send the modified streaming service provider broadcast announcement message to the UPF network element.

That is, the SMF network element may send the second delay information to the UPF network element through a broadcast service provider broadcast announcement message. In this way, the UPF network element can send the second delay information to the UE by forwarding the broadcast service provider broadcast announcement message to the UE.

Alternatively, the SMF network element may send a streaming service receiver preparation (Listen Ready) message carrying the second delay information to the UPF network element, that is, send the second delay information to the UPF network element through the streaming service receiver message. In this way, the UPF network element can send the second delay information by sending the stream service recipient message to the TSN.

S206. The UPF network element sends the second delay information to the UE. After receiving the second delay information from the UPF network element, the UE can determine whether the second delay has exceeded the maximum transmission delay requirement between the transmission of the stream service provider to the stream service receiver in the TSN.

When the UPF network element sends the second delay information to the UE, it may also send flow identification information.

For example, the UPF network element may forward the stream service provider broadcast announcement message that it received from the SMF network element in S205 to the UE, where the message carries the second delay information and the flow identification information.

It should be understood that the UPF network element may determine whether to send a stream service provider broadcast announcement message to the SMF network element or to the UE according to the instruction of the SMF network element.

It should be understood that S206 is not a necessary step. That is, the UPF network element may not send the second delay information to the UE.

For example, if the first delay has exceeded the maximum transmission delay requirement between the transmission of the stream service provider to the stream service receiver in the TSN, the UPF network element may not send the second delay information to the UE.

In the communication method in the embodiment of the present application, the SMF network element determines the maximum transmission delay of the stream from the UPF network element to the UE according to the PCC rule, and uses the maximum transmission delay as the cumulative delay of the stream from the UPF network element to the UE. So that the SMF network element can determine the first time that the stream is transmitted from the stream service provider in the TSN to the UE according to the maximum transmission delay stream and the first delay in which the stream is transmitted from the stream provider in the TSN to the UPF network element. The two delays can further determine that the QoS of the stream can be guaranteed and the stream can be transmitted according to the second delay in a communication network in which the 3GPP network and the TSN are interoperable.

In addition, according to the solution of this application, the SMF network element will determine the maximum transmission delay of the flow from the UPF network element to the UE according to the PCC rule as the cumulative delay of the flow from the UPF network element to the UE. However, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization of all nodes between the UPF network element and the UE is achieved, so that the UPF network element reaches the All transmission nodes of the UE support the TSN network to calculate the cumulative delay of the stream being transmitted from the UPF network element to the UE. Compared with the method of the prior art, the scheme of the present application has a simple scheme and is easy to implement.

A schematic flowchart of a communication method according to another embodiment of the present application is shown in FIG. 3. It should be understood that FIG. 3 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 3. In addition, each step in FIG. 3 may be performed in a different order than that presented in FIG. 3, and it may not be necessary to perform all operations in FIG. 3.

S301. The UPF network element receives the first delay information from the TSN, and the first delay information is used to indicate the first delay of the flow from the TSN stream service provider to the UPF network element.

This step can be referred to S201, which is not repeated here.

S302. The UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element.

For this step, refer to S202, and details are not described herein again.

S303. The SMF network element obtains a PCC rule corresponding to the flow from a policy control function (policy control function (PCF) network element).

For example, the SMF network element sends flow information to the PCF network element, and the PCF network element receives the flow information from the SMF network element; the PCF network element determines the PCC rule corresponding to the flow according to the flow information, and the PCC rule may include the 5QI corresponding to the flow ; The SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

For example, the PCC network element determines the PCC rule corresponding to the flow according to the flow information, including: the PCC network element determines at least one of a bandwidth requirement, a delay requirement, or a flow reliability requirement of the flow according to the flow information sent by the SMF network element. Item, generating a PCC rule for the flow of the UE according to the subscription information of the UE.

The flow information sent by the SMF network element to the PCF network element may include one or more of the following: the flow ID, the source address and the destination address of the flow, the maximum frame size of the transport stream, and the frame used for the transport stream. Interval, the priority of the stream, the maximum allowable delay for a single frame of the stream from the Talker to the Listener, or the reliability requirements of the stream.

That is, the SMF network element can send one or more of the above information to the PCF network element, so that the PCF network element can determine and return the corresponding PCC rule to the SMF network element based on the one or more information.

Optionally, S303 may not be performed in the communication method in the embodiment of the present application.

For example, a PCC rule may be configured locally on the SMF network element, and the SMF network element matches the corresponding PCC rule according to the above-mentioned flow information. For another example, after the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element, it can cache the PCC rule. In this way, the next time the SMF network element needs to use the PCC rule corresponding to the flow, it can be obtained directly from the SMF network element without executing S303, which can improve efficiency.

S304. The SMF network element determines, according to the PCC rule of the flow, a third delay in transmitting the flow from the UPF network element to the UE. For this step, refer to S203, and details are not described herein again.

S305. The SMF network element determines a second delay for transmitting the stream from the TSN's streaming service provider to the UE according to the third delay determined in S304 and the first delay indicated by the first delay information.

This step may refer to S204, and is not repeated here.

S306. The SMF network element determines whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that a bandwidth resource can be reserved for the flow according to the PCC rule corresponding to the flow, S307 may be performed; otherwise, the communication method in FIG. 7 may be performed.

The SMF network element determines whether the bandwidth resource can be reserved for the flow according to the PCC rule corresponding to the flow. It can be understood that the SMF network element determines whether the core network and the wireless access network can meet the bandwidth demand and time of the flow according to the PCC rule corresponding to the flow. Delay demand.

The SMF network element determines whether the core network and the radio access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow may include: the SMF network element determines the bandwidth requirements of the flow according to the PCC rules corresponding to the flow, and determines the core network and wireless Whether the access network can meet the bandwidth requirements and delay requirements of this flow.

The SMF network element determines whether the core network and the wireless access network can meet the bandwidth and delay requirements of the flow according to the PCC rules corresponding to the flow. The SMF network element can determine whether the UPF network element can satisfy the flow bandwidth according to the PCC rules corresponding to the flow. Demand and / or latency requirements.

Optionally, in the method in the embodiment of the present application, S306 may not be performed, that is, the SMF network element may directly execute S307 after determining the second delay in S305.

S307. The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Among them, the SMF network element can simultaneously send flow identification information to the UPF network element.

For example, the SMF network element may modify the first delay information in the stream service provider broadcast announcement message received by the SMF network element from the UPF network element in S302 to the second delay information, so that the stream service provider broadcast announcement may be The first delay recorded in the message is modified to the second delay. Then, the SMF network element may send the modified streaming service provider broadcast announcement message to the UPF network element.

S308. The UPF network element sends the second delay information to the UE. Accordingly, the UE receives the second delay information from the UPF network element. Among them, the SMF network element can simultaneously send flow identification information to the UPF network element.

For example, the UPF network element may forward the streaming service provider broadcast announcement message received from the SMF network element in S307 to the UE.

Optionally, in the communication method in the embodiment of the present application, S308 may not be performed. Correspondingly, S309 to S311 may not be performed.

S309. The UE determines whether the second delay can meet the delay requirement of the flow according to the second delay information received from S308.

For example, the delay requirement of the stream may be the maximum allowable delay in transmitting a single frame of the stream from the stream service provider to the stream service receiver. The delay requirement of the stream may be carried on the stream service provider as the stream information and broadcast. Statement message.

If it is determined that the second delay can meet the delay requirement of the flow, S310 may be performed; otherwise, the UE may initiate a flow service receiver inquiry request for a failure declaration message from the UPF network element, and then the UPF network element sends the flow The service receiver asks the failure declaration message and forwards it to the streaming service provider in the TSN.

Optionally, the UE may also determine whether the stream is interested. If it is determined that it is of interest and it is determined that the second delay can meet the delay requirement of the flow, S310 may be performed; otherwise, the UE may initiate a flow service receiver to the UPF network element to query the failure declaration message, and then the UPF network element accepts the flow service. The requester forwards the failure declaration message to the streaming service provider in the TSN.

Whether the UE is interested refers to whether the UE is willing to receive this stream. For example, the UE may prompt the user whether the stream needs to be received, and determine whether the stream needs to be received according to the user's input. If the user chooses to receive the stream, the UE is definitely interested, otherwise it is not interested.

S310: The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include flow identification information. Optionally, the message may further include second delay information.

For example, the UE may send a Stream Service Receiver Ready (Listener Ready) message to the UPF network element, and the message includes flow identification information and second delay information.

S311. The UPF network element sends the message received by the UPF network element from the UE in S310 to the SMF network element, indicating that the UE can receive the stream.

For example, the UPF network element may forward the stream service recipient preparation message received by the UPF network element from the UE in S310 to the SMF network element.

S312: The SMF network element sends the bandwidth requirement information of the flow to the UPF network element. In addition, the SMF network element can also update the credit scheduling parameters of the UPF network element.

After the UPF network element receives the bandwidth demand message of the stream from the SMF network element, it can reserve bandwidth resources for the stream according to the bandwidth demand information, so that when the stream is transmitted to the UPF network element, the UPF network element can have the corresponding bandwidth. Resources to transmit the stream, which can further improve the transmission reliability of the stream.

Optionally, in the communication method in the embodiment of the present application, S312 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S313. The SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

After the AN device receives the bandwidth demand information from the SMF network element, it can reserve bandwidth resources for the stream according to the bandwidth demand information, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the flow. Transmission reliability.

It should be understood that, in this implementation manner, the AN device corresponding to the UE refers to a device that provides access network services for the UE.

Optionally, in the communication method according to the embodiment of the present application, S313 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S313 is not performed in the communication method in the embodiment of the present application, S314 and S315 may not be performed correspondingly.

S314. The AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S313 is performed, S314 and S315 may not be performed.

S315. If the SMF network element receives the first information from the AN device, and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element sends a message indicating that the resource reservation succeeds to the UPF network element.

If the first information indicates that the AN device fails to reserve resources for the flow, the communication method shown in FIG. 7 may be performed.

S316. The UPF network element sends flow identification information and second delay information to the TSN.

For example, if S310 is also performed in the communication method, the UPF network element may forward the stream service receiver preparation message received by the UPF network element from the UE in S310 to the TSN, and the stream service receiver preparation message carries the flow identifier. Information and second delay information.

For example, if S310 is not performed in the communication method, the UPF network element may send the TSF network element identification information and second delay information of the stream received by the UPF network element from the SMF network element in S307.

For example, if S315 is performed in the communication method, the UPF network element receives the information indicating that the resource reservation is successful from the SMF network element, and then sends flow identification information and second delay information to the TSN.

For example, if S315 is not performed in this communication method, after the UPF network element receives the flow identification information and the second delay information from the SMF network element, it may send the flow identification information and the second delay information to the TSN.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S306 is not limited. For example, S306 may precede S305, or S306 may precede S304.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S312 is not limited. It only needs to satisfy S312 after S306.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S313 is not limited. It only needs to satisfy that S313 is located after S306 and before S314.

FIG. 4 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 4 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 4. In addition, each step in FIG. 4 may be performed in a different order than that presented in FIG. 4, and it is possible that not all operations in FIG. 4 are to be performed.

For S401-S405, you can refer to S301-S305, which will not be repeated here.

S406. The SMF network element determines whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that a bandwidth resource can be reserved for the flow according to the PCC rule corresponding to the flow, S407 may be performed; otherwise, the communication method in FIG. 7 may be performed.

The SMF network element determines whether a bandwidth resource can be reserved for the flow according to the PCC rule corresponding to the flow. It can be understood that the SMF network element determines whether the core network and the wireless access network can meet the bandwidth requirement of the flow according to the PCC rule corresponding to the flow.

The SMF network element determines whether the core network and the radio access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow may include: the SMF network element determines the bandwidth requirements of the flow according to the PCC rules corresponding to the flow, and determines the core network and wireless Whether the access network can meet the bandwidth requirements of this flow.

S407. The SMF network element sends the bandwidth requirement information of the flow to the UPF network element. In addition, the SMF network element can also update the credit scheduling parameters of the UPF network element.

After the UPF network element receives the bandwidth demand message of the stream from the SMF network element, it can reserve bandwidth resources for the stream according to the bandwidth demand information, so that when the stream is transmitted to the UPF network element, the UPF network element can have the corresponding bandwidth. Resources to transmit the stream, which can further improve the transmission reliability of the stream.

S408. The SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

After the AN device receives the bandwidth demand information from the SMF network element, it can reserve bandwidth resources for the stream according to the bandwidth demand information, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the flow. Transmission reliability.

It should be understood that, in this implementation manner, the AN device corresponding to the UE refers to a device that provides access network services for the UE.

S409. The AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

S410. If the SMF network element receives the first information from the AN device, and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element sends a message indicating that the resource reservation succeeds to the UPF network element.

If the first information indicates that the AN device fails to reserve resources for the flow, the communication method shown in FIG. 7 may be performed.

S411. The SMF network element sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Among them, the SMF network element can simultaneously send flow identification information to the UPF network element.

For example, the SMF network element may modify the first delay information in the stream service provider broadcast announcement message received by the SMF network element from the UPF network element in S402 to the second delay information, so that the stream service provider broadcast announcement may be The first delay recorded in the message is modified to the second delay. Then, the SMF network element may send the modified streaming service provider broadcast announcement message to the UPF network element.

Optionally, the information indicating that the resource reservation is successful in S410 and the second delay information in S411 may be sent to the UPF together, or S410 may not be performed. After receiving the first information sent by the AN device and SMF Indicates that the AN device successfully reserves resources for the flow, and executes S411. The UPF receives the second delay information sent by the SMF, that is, determines that the resource reservation is successful, and executes step S412.

S412. The UPF network element sends the second delay information to the UE. Accordingly, the UE receives the second delay information from the UPF network element. Among them, the SMF network element can simultaneously send flow identification information to the UPF network element.

For example, the UPF network element may forward the streaming service provider broadcast announcement message received from the SMF network element in S411 to the UE.

S413. The UE determines whether the second delay can meet the delay requirement of the flow according to the second delay information received from S412.

If it is determined that the second delay can meet the delay requirement of the stream, S414 may be performed; otherwise, the UE may initiate a stream service receiver inquiry request (Failed declaration) message to the UPF network element, and then the UPF network element The service receiver asks the failure declaration message and forwards it to the streaming service provider in the TSN.

Optionally, the UE may also determine whether the stream is interested. If it is determined that it is interested and it is determined that the second delay can meet the delay requirement of the flow, S414 may be performed; otherwise, the UE may initiate a flow service receiver to the UPF network element to query the failure declaration message, and then the UPF network element accepts the flow service. The requester forwards the failure declaration message to the streaming service provider in the TSN.

S414. The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include flow identification information and second delay information.

For example, the UE may send a Stream Service Receiver Ready (Listener Ready) message to the UPF network element, and the message includes flow identification information and second delay information.

S415. The UPF network element sends the flow identification information and the second delay information to the TSN.

For example, the UPF network element may forward the stream service receiver preparation message received by the UPF network element from the UE in S414 to the TSN, and the stream service receiver preparation message carries the flow identification information and the second delay information.

FIG. 5 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that steps or operations of the communication method are shown in FIG. 5, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 5. In addition, each step in FIG. 5 may be performed in a different order than that presented in FIG. 5, and it is possible that not all operations in FIG. 5 are to be performed.

For S501-S505, you can refer to S301-S305, which will not be repeated here.

S506. The SMF network element determines whether a session modification process or a session establishment process can be triggered for the flow to establish a corresponding QoS flow (QoS flow) for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that a corresponding QoS flow can be established for the flow according to the PCC rule corresponding to the flow, S507 may be performed; otherwise, the communication method in FIG. 7 may be performed.

The SMF network element determines whether a corresponding QoS flow can be established for the flow according to the PCC rules corresponding to the flow. It can be understood that the SMF network element determines whether the core network and the wireless access network can meet the bandwidth requirements of the flow according to the PCC rules corresponding to the flow. And latency requirements.

S507. The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Among them, the SMF network element can simultaneously send flow identification information to the UPF network element.

For example, the SMF network element may modify the first delay information in the stream service provider broadcast announcement message received by the SMF network element from the UPF network element in S502 to the second delay information, so that the stream service provider broadcast announcement may be The first delay recorded in the message is modified to the second delay. Then, the SMF network element may send the modified streaming service provider broadcast announcement message to the UPF network element.

S508. The UPF network element sends the second delay information to the UE. Accordingly, the UE receives the second delay information from the UPF network element. The UPF network element sends the flow identification information to the UE at the same time.

For example, the UPF network element may forward the streaming service provider broadcast announcement message received from the SMF network element in S507 to the UE.

In S509, the UE determines whether the second delay can meet the delay requirement of the flow according to the second delay information received from S508.

If it is determined that the second delay can meet the delay requirement of the stream, S510 may be executed; otherwise, the UE may initiate a stream service receiver inquiry request for a failure declaration message to the UPF network element, and then the UPF network element The service receiver asks the failure declaration message and forwards it to the streaming service provider in the TSN.

Optionally, the UE may also determine whether the stream is interested. If it is determined that it is of interest and it is determined that the second delay can meet the delay requirement of the flow, S510 may be performed; otherwise, the UE may initiate a flow service receiver to the UPF network element to query the failure declaration message, and then the UPF network element accepts the flow service. The requester forwards the failure declaration message to the streaming service provider in the TSN.

S510. The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include flow identification information and second delay information.

For example, the UE may send a Stream Service Receiver Ready (Listener Ready) message to the UPF network element, and the message includes flow identification information and second delay information.

S511. The UPF network element sends flow identification information and second delay information to the TSN.

For example, the UPF network element may forward the stream service receiver preparation message received by the UPF network element from the UE in S510 to the TSN, and the stream service receiver preparation message carries the flow identification information and the second delay information.

FIG. 6 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 6 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 6. In addition, each step in FIG. 6 may be performed in a different order than that presented in FIG. 6, and it is possible that not all operations in FIG. 6 are to be performed.

S601. The UPF network element receives the first delay information from the TSN, and the first delay information is used to indicate a first delay of the transmission of the stream from the stream service provider of the TSN to the UPF network element.

This step can be referred to S201, which is not repeated here.

S602. The UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element.

For this step, refer to S202, and details are not described herein again.

S603. The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For this step, refer to S303, and details are not described herein again.

Optionally, S603 may not be performed in the communication method in the embodiment of the present application.

For example, a PCC rule may be configured locally on the SMF network element, and the SMF network element matches the corresponding PCC rule according to the above-mentioned flow information. .

For another example, after the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element, it can cache the PCC rule. In this way, the next time the SMF network element needs to use the PCC rule corresponding to the flow, it can be obtained directly from the SMF network element without executing S603, thereby improving efficiency.

S604. The SMF network element determines, according to the PCC rule of the flow, a third delay in transmitting the flow from the UPF network element to the UE. For this step, refer to S203, and details are not described herein again.

S605. The SMF network element determines a second delay for transmitting the stream from the TSN's streaming service provider to the UE according to the third delay determined in S604 and the first delay indicated by the first delay information.

This step may refer to S204, and is not repeated here.

S606. The SMF network element determines whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow.

This step can be referred to S306, which is not repeated here.

If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, S607 may be performed; otherwise, the communication method in FIG. 7 may be performed.

Optionally, in the method in the embodiment of the present application, S406 may not be performed, that is, the SMF network element may directly execute S607 after determining the second delay in S605.

S607. The SMF network element sends the flow identification information to the UPF network element.

For example, the SMF network element sends a stream service provider broadcast announcement message to the UPF network element, and the message carries only the flow identification information.

Optionally, in the communication method in the embodiment of the present application, S607 may not be performed. Correspondingly, S608 to S611 may not be executed.

S608. The UPF network element sends the UE identification information of the flow received by the UPF network element in S607.

For example, the UPF network element forwards the broadcast service broadcast message received from the SMF network element to the UE, and the message carries the flow identification information.

Optionally, in the communication method according to the embodiment of the present application, S608 may not be performed. Correspondingly, S609 to S611 may not be executed.

S609: The UE determines whether the stream is interested, and if so, performs S610. Otherwise, the UE may initiate a flow service receiver inquiry failure declaration message to the UPF network element, and then, the UPF network element forwards the flow service receiver inquiry failure declaration message to the flow service provider in the TSN.

For example, the UE determines whether it is interested in the flow indicated by the flow identification information carried in the broadcast service broadcast announcement message.

S610: The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include identification information of the flow.

For example, the UE sends a stream service recipient preparation message to the UPF network element, and the message includes identification information of the stream.

S611, the UPF network element sends a message to the SMF network element, indicating that the UE can receive the stream.

For example, the UPF network element may forward the stream service recipient preparation message received by the UPF network element from the UE in S610 to the SMF network element.

S612: The SMF network element sends the bandwidth requirement information of the flow to the UPF network element. In addition, the SMF network element can also update the credit scheduling parameters of the UPF network element.

This step can be referred to S312, which will not be repeated here.

Optionally, in the communication method in the embodiment of the present application, S612 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S613. The SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

This step can be referred to S313, which is not repeated here.

Optionally, in the communication method according to the embodiment of the present application, S613 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S613 is not executed in the communication method in the embodiment of the present application, S614 and S615 may not be executed accordingly.

S614. The AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S613 is performed, S614 may not be performed. S615. The SMF network element sends the flow identification information and the second delay information to the UPF network element.

For example, the SMF network element may send a stream service receiver preparation message to the UPF network element, and the stream service receiver preparation message carries flow identification information and second delay information.

If S614 is performed in the communication method, the SMF network element may execute S615 after receiving the first information and the first information indicates that the AN device successfully reserves resources for the flow. If S614 is not executed in the communication method, the SMF network element may execute S615 after S611.

Further, if S607 is not executed in the communication method, the SMF network element may execute S615 after S606.

If the SMF network element does not receive the first information sent by the AN device or receives information from the AN device indicating that the resource reservation fails, the communication method shown in FIG. 7 may be performed.

S616. The UPF network element sends the flow identification information and the second delay information to the TSN.

The UPF network element sends a stream service recipient preparation message received by the UPF network element from the SMF network element in S615 to the TSN.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S606 is not limited. For example, S606 may be located before S605, or S606 may be located before S604.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S612 is not limited. It only needs to meet S612 after S606.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S613 is not limited. It only needs to satisfy that S613 is located after S605 and before S614.

FIG. 7 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 7 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 7. In addition, each step in FIG. 7 may be performed in a different order than that presented in FIG. 7, and it is possible that not all operations in FIG. 7 are to be performed.

S701. The SMF network element sends a stream service provider failure declaration (Talker failed declaration) message to the UPF network element, which is used to indicate that the stream service cannot be provided due to bandwidth limitation or other restrictions.

For example, when the SMF network element judges that the UPF network element or the AN device cannot reserve bandwidth resources for the flow, or cannot satisfy the flow QoS requirements, it may send a flow service provider failure declaration message to the UPF network element.

For example, when a higher priority stream needs to be transmitted; or when the UE moves to a new base station, the output port corresponding to the UPF network element changes, causing the output port to exceed the reservable upper limit; or the PCF does not allow the stream to be reserved. When reserving bandwidth resources, the SMF network element can determine that the QoS requirements of the flow cannot be met.

S702. The UPF network element forwards the flow service provider failure declaration message to the UE.

S703: The UE initiates a stream service receiver inquiry failure declaration (Listener Asking, Failed, Declaration) message to the UPF network element.

S704. The UPF network element forwards the streaming service receiver inquiry failure declaration message to the streaming service provider in the TSN.

It should be understood that the message names shown in FIG. 7 are only examples. As long as the message capable of realizing the response function in the communication method belongs to the protection scope of the embodiment of the present application.

A schematic flowchart of a communication method according to an embodiment of the present application is shown in FIG. 8. It should be understood that FIG. 8 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 8.

S801. The UE sends the first delay information of the stream to the SMF network element. The SMF network element receives the first delay information from the UE, and the first delay information is used to indicate the first delay.

The first delay is a cumulative delay determined by the UE and the stream is transmitted from the UE to the UPF network element. At this time, the UE serves as the streaming service provider, and the network element in the TSN serves as the streaming service receiver.

In some possible implementation manners, the first delay is obtained by adding the processing delay of a single frame of the local stream to the default value of the transmission delay of the stream from the UE to the UPF network element. An example of the default value of the transmission delay of the stream from the UE to the UPF network element is 500 nanoseconds.

The UPF network element may be the UPF network element 103 in FIG. 1, the UE may be the UE 101 in FIG. 1, and the SMF network element may be the SMF network element 105 in FIG. 1.

The first delay information may be carried in a broadcast service broadcast announcement message. The streaming service provider broadcast announcement message can be used to broadcast the stream and the QoS requirements corresponding to the stream.

In addition to the first delay information, the broadcast announcement message of the stream service provider may also carry a stream identifier. In addition, the broadcast service broadcast announcement message can also carry one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from Talker to Listener The maximum allowable delay, the reliability requirement of the flow, or the reason for the resource reservation failure.

An implementation manner in which the UE sends the first delay information of the stream to the SMF network element may include that the UE directly sends the first delay information to the SMF network element. For example, the UE sends a stream service provider broadcast announcement message to the SMF network element through the AMF network element, and the stream service provider broadcast announcement message carries first delay information.

Another implementation manner in which the UE sends the first delay information of the stream to the SMF network element may include: the UE sends the first delay information to the UPF network element, and then the UPF network element sends the first delay information to the SMF network element. For example, the UE sends the broadcast service provider broadcast announcement message to the UPF network element, and the UPF network element forwards the broadcast service provider broadcast announcement message to the SMF network element, and the broadcast service announcement broadcast message carries the first delay information.

S802. The SMF network element determines a third delay for the stream to be transmitted from the UE to the UPF network element according to the PCC rule of the flow. The third delay may be the maximum transmission delay of the flow from the UE to the UPF network element.

The maximum transmission delay of the flow from the UE to the UPF network element can be equivalent to the maximum transmission delay of the flow from the UPF network element to the UE. Therefore, this step can refer to S203. For brevity, it will not be repeated here.

S803. The SMF network element determines a second delay for transmitting the stream from the UE to the UPF network element according to the first delay and the third delay.

In some possible implementation manners, the SMF network element determines, according to the first delay and the third delay, a second delay for transmitting a stream from the UE to the UPF, which may include: the SMF network element combines the first delay with the first delay The three delays are added and a value obtained by subtracting the default value of the transmission delay of the stream from the UE to the UPF network element is determined as the second delay.

The default value of the transmission delay of the stream from the UE to the UPF network element can be pre-configured.

For example, one example of a default value of the transmission delay of a stream from a UE to a UPF network element is 500 nanoseconds. In this case, the first delay and the third delay can be added, and the value obtained by subtracting 500 nanoseconds can be determined as the second delay.

S804: The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay.

For example, the SMF network element may send the second delay information to the UPF network element through a broadcast service provider broadcast announcement message. In this way, the UPF network element can send the second delay information to the TSN by forwarding the broadcast service provider broadcast announcement message to the TSN.

S805. The UPF network element sends fourth delay information and flow identification information to the TSN. After the node in the TSN receives the fourth delay information, it can determine whether the fourth delay exceeds the maximum transmission delay requirement of the stream service receiver from the UE to the stream service receiver in the TSN.

For example, the UPF network element sends the streaming service provider broadcast announcement message received by the UPF in S804 to the TSN, where the UPF updates the second delay carried in the streaming service provider broadcast announcement message to a fourth delay.

The fourth delay information is a value after the UPF network element adds the second delay information to the delay of the stream from the UPF to the next hop bridge in the TSN. If the next hop of the UPF is the stream service receiver, the fourth delay information is a value of the delay after the UPF network element transmits the second delay information and the stream from the UPF to the stream service receiver.

In this communication method, the SMF network element receives the first delay information from the UE and learns the first delay determined by the UE and the stream is transmitted from the UE to the UPF network element according to the first delay information. In addition, the SMF network element is based on The PCC rule determines the maximum transmission delay of the flow from the UE to the UPF network element, and then the SMF network element adjusts the first delay determined by the UE and the maximum transmission delay determined by the SMF network element, so that the flow can be transmitted from the UE to the The second delay of the UPF network element can further transmit the stream according to the second delay in a communication network in which the 3GPP network and the TSN are interworking.

In addition, the SMF network element determines the cumulative delay of the flow from the UE to the UPF network element based on the maximum transmission delay of the flow from the UE to the UPF network element and the first delay determined by the UE. Then, in the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that the UPF network element reaches the UE The TSN network is supported on all transmission nodes in order to calculate the cumulative delay of the stream transmission from the UE to the UPF network element. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

FIG. 9 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 9 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 9. In addition, each step in FIG. 9 may be performed in a different order than that presented in FIG. 9, and it is possible that not all operations in FIG. 9 are to be performed.

S901. The UE sends the first delay information of the stream to the SMF network element. The SMF network element receives the first delay information from the UE, and the first delay information is used to indicate the first delay.

This step can be referred to S801, which is not repeated here.

S902. The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element. For this step, refer to S303, and details are not described herein again.

Optionally, S902 may not be performed in the communication method in the embodiment of the present application.

For example, the SMF network element may obtain the PCC rules corresponding to the flow from other network elements.

For another example, after the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element or other network elements, the PCC rule may be cached. In this way, the next time the SMF network element needs to use the PCC rule corresponding to the flow, it can be obtained directly from the SMF network element without executing S902, which can improve efficiency.

S903. The SMF network element determines a third delay for the stream to be transmitted from the UE to the UPF network element according to the PCC rule of the flow. The third delay may be the maximum transmission delay of the flow from the UE to the UPF network element.

The maximum transmission delay of the flow from the UE to the UPF network element can be equivalent to the maximum transmission delay of the flow from the UPF network element to the UE. Therefore, this step can refer to S203, which will not be repeated here.

S904. The SMF network element determines a second delay of the transmission of the stream from the UE to the UPF according to the third delay determined in S903 and the first delay indicated by the first delay information.

For this step, refer to S803, and details are not described herein again.

S905. The SMF network element determines whether to reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow.

This step can be referred to S306, which is not repeated here.

If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, S906 may be performed; otherwise, S906 to S908 may not be performed.

Optionally, in the method in the embodiment of the present application, S905 may not be performed, that is, the SMF network element may directly execute S906 or S907 or S909 after determining the second delay in S904.

S906. The SMF network element sends the bandwidth requirement information of the flow to the UPF network element. In addition, the SMF network element can also update the credit scheduling parameters of the UPF network element.

This step can be referred to S312, which will not be repeated here.

Optionally, in the communication method in the embodiment of the present application, S906 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S907: The SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

This step can be referred to S313, which is not repeated here.

Optionally, in the communication method in the embodiment of the present application, S907 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S907 is not performed in the communication method in the embodiment of the present application, S908 may not be performed correspondingly.

S908: The AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S907 is performed, S908 may not be performed.

S909. The SMF network element sends the second delay information to the UPF network element.

For example, the SMF network element sends a stream service provider broadcast announcement message to the UPF network element, and the message carries the second delay information.

If S908 is performed in the communication method, the SMF network element may execute S909 after receiving the first information and the first information indicates that the AN device successfully reserves resources for the stream. If the SMF network element does not receive the first information sent by the AN device or receives information from the AN device indicating that the resource reservation fails, the communication method shown in FIG. 7 may be performed.

S910. The UPF network element sends fourth delay information and flow identification information to the TSN. After the node in the TSN receives the fourth delay information, it can determine whether the fourth delay exceeds the maximum transmission delay requirement of the stream service receiver from the UE to the stream service receiver in the TSN.

For example, the UPF network element sends the streaming service provider broadcast announcement message received by the UPF in S910 to the TSN, where the UPF updates the second delay carried in the streaming service provider broadcast announcement message to a fourth delay.

The fourth delay information is a value after the UPF network element adds the second delay information to the delay of the stream from the UPF to the next hop bridge in the TSN. If the next hop of the UPF is the stream service receiver, the fourth delay information is a value of the delay after the UPF network element transmits the second delay information and the stream from the UPF to the stream service receiver.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S905 is not limited. For example, S905 may be located before S904, or S905 may be located before S903.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S906 is not limited. It only needs to satisfy S906 after S905.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S907 is not limited. It only needs to satisfy that S907 is located after S904 and before S908.

FIG. 10 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 10 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 10. In addition, each step in FIG. 10 may be performed in a different order than that presented in FIG. 10, and it is possible that not all operations in FIG. 10 are to be performed.

For S1001-S1004, you can refer to S901-S904, which will not be repeated here.

S1005. The SMF network element determines whether a session modification process or a session establishment process can be triggered for the flow to establish a corresponding QoS flow (QoS flow) for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that a corresponding QoS flow can be established for the flow according to the PCC rule corresponding to the flow, S1006 may be performed; otherwise, the communication method in FIG. 7 may be performed.

The SMF network element determines whether a corresponding QoS flow can be established for the flow according to the PCC rules corresponding to the flow. It can be understood that the SMF network element determines whether the core network and the wireless access network can meet the bandwidth requirements of the flow according to the PCC rules corresponding to the flow. And latency requirements.

S1006. The SMF network element sends the second delay information to the UPF network element.

For example, the SMF network element sends a stream service provider broadcast announcement message to the UPF network element, and the message carries the second delay information.

S1007. The UPF network element sends the fourth delay information and flow identification information to the TSN. After the node in the TSN receives the fourth delay information, it can determine whether the fourth delay exceeds the maximum transmission delay requirement of the stream service receiver from the UE to the stream service receiver in the TSN.

For example, the UPF network element sends a broadcast service provider broadcast announcement message received by the UPF in S1006 to the TSN, where the UPF updates the second delay carried in the broadcast service provider broadcast announcement message to a fourth delay.

The fourth delay information is a value after the UPF network element adds the second delay information to the delay of the stream from the UPF to the next hop bridge in the TSN. If the next hop of the UPF is the stream service receiver, the fourth delay information is a value of the delay after the UPF network element transmits the second delay information and the stream from the UPF to the stream service receiver.

A schematic flowchart of a communication method according to an embodiment of the present application is shown in FIG. 11. It should be understood that FIG. 11 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 11.

S1101: The UE sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UE.

The flow information can include one or more of the following: the flow ID, the source and destination addresses of the flow, the maximum frame size of the transport stream and the interval between frames used to transport the stream, the priority of the stream, and the stream The maximum allowable delay of a single frame transmitted from the Talker to the Listener, or the reliability requirements of the flow, or the delay information of the flow determined by the UE from the UE to the UPF network element.

The UE sends flow information to the SMF network element, so as to request the SMF network element to reserve bandwidth resources and / or update delay information for the flow. At this time, the UE serves as the streaming service provider, and the network element in the TSN serves as the streaming service receiver.

For example, the UE may send a Resource Reservation Request (Resource Reservation Request) message to the SMF network element, requesting the SMF network element to reserve bandwidth resources for the flow, and the message carries flow information.

The SMF network element may be the SMF network element 105 in FIG. 1, and the UE may be the UE 101 in FIG. 1.

S1102: The SMF network element determines the third delay of the flow from the UE to the UPF network element according to the flow information and the PCC rule of the flow. The third delay may be the maximum transmission delay of the flow from the UE to the UPF network element.

The maximum transmission delay of the flow from the UE to the UPF network element can be equivalent to the maximum transmission delay of the flow from the UPF network element to the UE. Therefore, this step can refer to S203, which will not be repeated here.

S1103: The SMF network element sends first delay information to the UE, and the first delay information is used to indicate a third delay determined by the SMF network element. Correspondingly, the UE receives the first delay information from the SMF network element.

For example, the SMF network element may send a Resource Reservation Response (Resource Reservation Response) message to the UE, where the message carries the first delay information.

The SMF network element may send the first delay information to the UE through the AMF network element, or may send the first delay information to the UE through the UPF network element.

S1104: The UE determines a target delay for transmitting a stream from the UE to the UPF network element according to a third delay indicated by the first delay information.

In some possible implementation manners, the UE determines a target delay for transmitting a stream from the UE to the UPF network element according to a third delay indicated by the first delay information, which may include: Frame processing delays are added together to determine the target delay.

S1105: The UE sends second delay information to the UPF network element, and the second delay information is used to indicate a target delay determined by the UE.

For example, the UE may send a streaming service provider broadcast announcement message to the UPF network element, where the message carries the second delay information. Of course, the message may also carry other information, such as the information of the stream mentioned in S1101.

S1106: The UPF network element sends the fourth delay information and flow identification information to the TSN. After the node in the TSN receives the fourth delay information, it can determine whether the fourth delay exceeds the maximum transmission delay requirement of the stream service receiver from the UE to the stream service receiver in the TSN.

For example, a UPF network element may send a streaming service provider broadcast announcement message received by the UPF network element from the UE in S1105 to the TSN, where the UPF updates the second delay carried in the broadcast service provider broadcast announcement message to the fourth time. Delay.

The fourth delay information is a value after the UPF network element adds the second delay information to the delay of the stream from the UPF to the next hop bridge in the TSN. If the next hop of the UPF is the stream service receiver, the fourth delay information is a value of the delay after the UPF network element transmits the second delay information and the stream from the UPF to the stream service receiver.

In this communication method, the SMF network element determines the maximum transmission delay of the stream from the UE to the UPF network element according to the PCC rule, and indicates the maximum transmission delay to the UE, so that the UE can determine the flow from the maximum transmission delay. The accumulated delay transmitted by the UE to the UPF network element can further transmit the stream according to the accumulated delay in a communication network in which the 3GPP network and the TSN interoperate.

In addition, the SMF network element determines the maximum transmission delay of the stream from the UE to the UPF network element according to the PCC rule, and indicates the maximum transmission delay to the UE, so that the UE can determine that the stream is transmitted from the UE to the UE according to the maximum transmission delay. Cumulative delay of UPF network elements. In the prior art, clock synchronization needs to be performed between two adjacent nodes between the UE and the UPF network element, and finally the clock synchronization of all nodes between the UE and the UPF network element is achieved, so that the UPF network element reaches The TSN network is supported on all transmission nodes of the UE to calculate the cumulative delay of the stream being transmitted from the UE to the UPF network element. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

A schematic flowchart of a communication method according to another embodiment of the present application is shown in FIG. 12. It should be understood that FIG. 12 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 12. In addition, each step in FIG. 12 may be performed in a different order than that presented in FIG. 12, and it is possible that not all operations in FIG. 12 are to be performed.

S1201: The UE sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UE. This step can be referred to S1101, which will not be repeated here.

S1202. The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element. For this step, refer to S303, and details are not described herein again.

Optionally, S1202 may not be performed in the communication method in the embodiment of the present application.

For example, the SMF network element may obtain the PCC rules corresponding to the flow from other network elements.

For another example, after the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element or other network elements, the PCC rule may be cached. In this way, the next time the SMF network element needs to use the PCC rule corresponding to the flow, it can be obtained directly from the SMF network element without executing S1202, which can improve efficiency.

S1203. The SMF network element determines the third delay of the flow from the UE to the UPF network element according to the PCC rule of the flow. The third delay may be the maximum transmission delay of the flow from the UE to the UPF network element.

The maximum transmission delay of the flow from the UE to the UPF network element can be equivalent to the maximum transmission delay of the flow from the UPF network element to the UE. Therefore, this step can refer to S203, which will not be repeated here.

S1204. The SMF network element can reserve bandwidth resources for the flow according to the PCC rule corresponding to the flow.

This step can be referred to S306, which is not repeated here.

If the SMF network element determines that the core network and the access network can reserve bandwidth resources for the flow according to the PCC rules corresponding to the flow, S1205 may be performed, otherwise S1205 to S1206 may not be performed.

S1205: The SMF network element sends the bandwidth requirement information of the flow to the UPF network element. In addition, the SMF network element can also update the credit scheduling parameters of the UPF network element.

This step can be referred to S312, which will not be repeated here.

Optionally, in the communication method according to the embodiment of the present application, S1205 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S1206, the SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

This step can be referred to S313, which is not repeated here.

Optionally, in the communication method in the embodiment of the present application, S1206 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S1206 is not executed in the communication method in the embodiment of the present application, S1207 may not be executed accordingly.

S1207: The AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S1206 is performed, S1207 may not be performed.

S1208: The SMF network element sends the first delay information and flow identification information to the UE. The first delay information is used to indicate the maximum transmission delay of the flow determined by the SMF network element from the UPF network element to the UE in step S1203. Correspondingly, the UE receives first delay information and flow identification information from the SMF network element. For this step, refer to S1103, and details are not described here.

If S1207 is performed in the communication method, the SMF network element may execute S1208 after receiving the first information and the first information indicates that the AN device successfully reserves resources for the stream. If the SMF network element does not receive the first information sent by the AN device, or receives information from the AN device indicating that the resource reservation fails, S1208 to S1210 may not be performed.

S1209: The UE determines a target delay for transmitting a stream from the UE to the UPF network element according to the maximum transmission delay indicated by the first delay information. This step can be referred to S1104, which will not be repeated here.

In S1210, the UE sends second delay information to the UPF network element, and the second delay information is used to indicate the target delay in S1209. This step can be referred to S1105, which is not repeated here.

S1211, the UPF network element sends the fourth delay information and flow identification information to the TSN. After the node in the TSN receives the fourth delay information, it can determine whether the fourth delay exceeds the maximum transmission delay requirement of the stream service receiver from the UE to the TSN.

For example, the UPF network element sends to the TSN the streaming service provider broadcast announcement message received by the UPF network element from the UE in S1210, where the UPF updates the second delay carried in the broadcast service broadcast announcement message to the fourth delay. .

The fourth delay information is a value after the UPF network element adds the second delay information to the delay of the stream from the UPF to the next hop bridge in the TSN. If the next hop of the UPF is the stream service receiver, the fourth delay information is a value of the delay after the UPF network element transmits the second delay information and the stream from the UPF to the stream service receiver.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S1204 is not limited. For example, S1204 can be located before S1203.

It should be understood that, in the communication method in the embodiment of the present application, the execution sequence of S1205 is not limited. It only needs to satisfy S1205 after S1204.

It should be understood that the communication method in the embodiment of the present application does not limit the execution sequence of S1206. It only needs to satisfy S1206 before S1203 and before S1207.

A schematic flowchart of a communication method according to another embodiment of the present application is shown in FIG. 13. It should be understood that FIG. 13 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 13. In addition, each step in FIG. 13 may be performed in a different order than that presented in FIG. 13, and it is possible that not all operations in FIG. 13 are to be performed.

For S1301-S1303, you can refer to S1201-S1203, which will not be repeated here.

S1304: The SMF network element determines whether a session modification process or a session establishment process can be triggered for the flow to establish a corresponding QoS flow (QoS flow) for the flow according to the PCC rule corresponding to the flow. If the SMF network element determines that a corresponding QoS flow can be established for the flow according to the PCC rule corresponding to the flow, S1305 may be performed; otherwise, the communication method in FIG. 7 may be performed.

The SMF network element determines whether a corresponding QoS flow can be established for the flow according to the PCC rules corresponding to the flow. It can be understood that the SMF network element determines whether the core network and the wireless access network can meet the bandwidth requirements of the flow according to the PCC rules corresponding to the flow And latency requirements.

S1305. The SMF network element sends the first delay information to the UE. Correspondingly, the UE receives the first delay information from the SMF network element. This step can be referred to S1208, which will not be repeated here.

For S1306-S1308, you can refer to S1209-S1211, which will not be repeated here.

A schematic flowchart of a communication method according to an embodiment of the present application is shown in FIG. 14. It should be understood that FIG. 14 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 14.

S1401: The UPF network element receives the first delay information of the flow from the TSN, and the first delay information is used to indicate the first delay of the flow from the stream service provider in the TSN to the UPF network element.

This step can be referred to S201, which is not repeated here.

S1402: The UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

The flow information includes at least one of the following: the flow ID, the source and destination addresses of the flow, the maximum frame size of the transport stream and the interval between the frames used to transport the stream, the priority of the stream, and the single frame of the stream The maximum allowable delay from the Talker to the Listener, or the reliability requirements of the stream.

For example, the UPF network element may forward the stream service provider broadcast announcement message that it received from the TSN in S1401 to the SMF network element.

S1403. The SMF network element sends the third delay information to the UPF network element according to the flow information, and the third delay information is used to indicate the third delay of the flow transmission from the UPF network element to the UE. The third delay may be a maximum transmission delay of the flow transmission from the UPF network element to the UE. Accordingly, the UPF network element receives the third delay information from the SMF network element. For example, after receiving the flow information from the UE, the SMF network element obtains the PCC rules of the flow according to the flow information, determines the 5QI corresponding to the flow according to the PCC rules of the flow, and further determines the PDB between the UPF corresponding to the 5QI and the UE. The PDB The maximum transmission delay transmitted from the UPF network element to the UE as a stream, and sending the third delay information to the UPF network element.

Alternatively, after receiving the flow information from the UE, the SMF network element obtains the PCC rules of the flow according to the flow information, determines the 5QI corresponding to the flow according to the PCC rules of the flow, and sends the 5QI to the UPF. The UPF determines the UPF corresponding to the 5QI according to the 5QI. The PDB between the UE and the UE. This PDB is used as a stream to transmit the maximum transmission delay from the UPF network element to the UE. For the implementation manner of the PCC rule for the SMF network element to obtain the flow, refer to S303. For the implementation manner of the SMF network element to determine the maximum transmission delay according to the PCC rule, refer to S304, and details are not described herein again.

For example, the SMF network element may send a stream service provider broadcast announcement message to the UPF network element, and the message carries the third delay information.

The UE may be UE 101 in FIG. 1.

S1404. The UPF network element determines a second delay for transmitting the stream from the streaming service provider in the TSN to the UE according to the first delay indicated by the first delay information and the third delay indicated by the third delay information.

For this step, refer to the implementation manner of determining the second delay by the SMF network element in S204, and details are not described herein again.

S1405. The UPF network element sends the second delay information and the flow identification information to the UE.

For example, the UPF network element may send a stream service provider broadcast announcement message to the UE, where the message carries the second delay information and the flow identification information. The flow identification information is used to indicate the identification of the flow.

It should be understood that S1405 is not a required step, that is, the UPF network element may not send the second delay information to the UE.

Optionally, the UPF network element may send the second delay information to the TSN. For example, the UPF network element may send a stream service receiver preparation message to the TSN, and the message carries the second delay information and the flow identification information.

In this communication method, the UPF network element uses the maximum transmission delay of the flow determined by the SMF network element from the UPF network element to the UE as the cumulative delay of the flow from the UPF network element to the UE. In the prior art, clock synchronization needs to be performed between two adjacent nodes between the UPF network element and the UE, and finally the clock synchronization of all nodes between the UPF network element and the UE is achieved, so that the UPF network element to the UE The TSN network is supported on all transmission nodes, so that the TSN network is supported on all transmission nodes from the UPF network element to the UE, so as to calculate the cumulative delay of the flow from the UPF network element to the UE. Compared with the prior art, the communication method has a simple scheme and is easy to implement.

A schematic flowchart of a communication method according to another embodiment of the present application is shown in FIG. 15. It should be understood that steps or operations of the communication method are shown in FIG. 15, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 15. In addition, each step in FIG. 15 may be performed in a different order than that presented in FIG. 15, and it is possible that not all operations in FIG. 15 are to be performed.

S1501. The UPF network element receives the first delay information from the TSN, and the first delay information is used to indicate a first delay of the flow from the TSN stream service provider to the UPF network element.

This step can be referred to S201, which is not repeated here.

S1502: The UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

This step can be referred to S1402, which will not be repeated here.

S1503. The SMF network element sends third delay information to the UPF network element according to the flow information, and the third delay information is used to indicate the maximum transmission delay of the flow from the UPF network element to the UE. Accordingly, the UPF network element receives the third delay information from the SMF network element.

This step can be referred to S1403, which will not be repeated here.

In S1504, the UPF network element determines a second delay in transmitting the stream from the TSN's streaming service provider to the UE according to the maximum transmission delay in S1503 and the first delay indicated by the first delay information.

This step may refer to S204, and is not repeated here.

S1505. The UPF network element sends the second delay information and flow identification information to the UE, and the second delay information is used to indicate the second delay. Correspondingly, the UE receives the second delay information from the UPF network element, and the flow identification information is used to indicate the flow identification.

For example, the UPF network element can modify the first delay information in the broadcast service broadcast message it receives from the TSN to the second delay information, so that the first time recorded in the broadcast service broadcast message can be changed. The delay was changed to a second delay. Then, the UPF network element may send the modified streaming service provider broadcast announcement message to the UE.

S1506: The UE determines, according to the second delay information received from S1505, that the second delay can meet the delay requirement of the stream.

This step can be referred to S309, which is not repeated here.

S1507: The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include flow identification information. Optionally, the message may further include second delay information.

This step can be referred to S310, which will not be repeated here.

S1508, the UPF network element reserves bandwidth resources for the flow according to the bandwidth requirement of the flow. The bandwidth requirement of this flow may be received by the UPF network element from the SMF network element. The SMF network element can determine the bandwidth requirements of the flow according to the PCC rules of the flow.

Optionally, in the communication method in the embodiment of the present application, S1508 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S1509: If the UPF network element successfully reserves bandwidth resources for the stream, send information to the SMF network element indicating that the UPF network element successfully reserves bandwidth resources, so that the SMF network element sends the bandwidth requirement information of the stream to the AN device corresponding to the UE. In addition, the UPF network element can also update the credit scheduling parameters of the UPF network element.

The UPF network element reserves bandwidth resources for the stream according to the bandwidth requirement information of the stream, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can improve the transmission of the stream. reliability.

S1510, the SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, to instruct the AN device to reserve bandwidth resources for the flow.

This step can be referred to S313, which is not repeated here.

Optionally, in the communication method in the embodiment of the present application, S1510 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S1510 is not executed in the communication method in the embodiment of the present application, S1511 and S1512 may not be executed accordingly.

S1511, the AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S1510 is performed, S1511 and S1512 may not be performed.

S1512: If the SMF network element receives the first information from the AN device, the SMF network element sends the first information to the UPF network element.

S1513: The UPF network element sends the flow identification information and the second delay information to the TSN.

For example, the UPF network element may send a stream service receiver preparation message to the TSN, and the stream service receiver preparation message carries the flow identification information and the second delay information.

If S1512 is performed in the communication method, the UPF network element may execute S1513 after receiving the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream. If the UPF network element does not receive the first information sent by the SMF, the communication method shown in FIG. 17 may be performed.

It should be understood that, in the communication method in the embodiment of the present application, the execution order of S1508 to S1512 is not limited, and for example, it may be located before S1505 or S1504.

FIG. 16 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 16 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. In addition, each step in FIG. 16 may be performed in a different order than that presented in FIG. 16, and it is possible that not all operations in FIG. 16 are to be performed.

S1601: The UPF network element receives the first delay information from the TSN, and the first delay information is used to indicate a first delay of the flow from the TSN stream service provider to the UPF network element.

This step can be referred to S201, which is not repeated here.

S1602: The UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

For this step, refer to S202, and details are not described herein again.

S1603: The SMF network element sends third delay information to the UPF network element according to the flow information, and the third delay information is used to indicate the maximum transmission delay of the flow from the UPF network element to the UE. Accordingly, the UPF network element receives the third delay information from the SMF network element.

This step can be referred to S1403, which will not be repeated here.

In S1604, the UPF network element determines a second delay for transmitting the stream from the TSN's streaming service provider to the UE according to the maximum transmission delay in S1603 and the first delay indicated by the first delay information.

This step may refer to S204, and is not repeated here.

S1605: The UPF network element sends the flow identification information to the UE. Accordingly, the UE receives the flow identification information from the UPF network element.

This step can be referred to S608, which is not repeated here.

S1606: The UE determines whether it is interested in the flow according to the identification information of the flow received from S1605. This step can be referred to S609, which is not repeated here.

S1607: The UE sends a message to the UPF network element, indicating that the UE can receive the stream. The message may include flow identification information.

For this step, refer to S610, and details are not described here.

S1608, the UPF network element reserves bandwidth resources for the flow according to the bandwidth requirement of the flow. The bandwidth requirement of this flow may be received by the UPF network element from the SMF network element. The SMF network element can determine the bandwidth requirements of the flow according to the PCC rules of the flow.

Optionally, in the communication method in the embodiment of the present application, S1608 may not be performed. That is, it is not necessary to reserve bandwidth resources for the flow on the UPF network element in advance.

S1609: If the UPF network element successfully reserves bandwidth resources for the flow, send information to the SMF network element indicating that the UPF network element has successfully reserved bandwidth resources, so that the SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE. In addition, the UPF network element can also update the credit scheduling parameters of the UPF network element.

The UPF network element reserves bandwidth resources for the stream according to the bandwidth requirement information of the stream, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can improve the transmission of the stream. reliability.

S1610, the SMF network element sends the bandwidth requirement information of the flow to the AN device corresponding to the UE, so as to instruct the AN device to reserve bandwidth resources for the flow.

This step can be referred to S313, which is not repeated here.

Optionally, in the communication method in the embodiment of the present application, S1610 may not be performed. That is, it is not necessary to reserve bandwidth resources for the stream on the AN device in advance.

If S1610 is not executed in the communication method in the embodiment of the present application, S1611 and S1612 may not be executed accordingly.

S1611, the AN device sends first information to the SMF network element, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, in the communication method, when S1610 is performed, S1611 and S1612 may not be performed.

S1612: If the SMF network element receives the first information from the AN device, the SMF network element sends the first information to the UPF network element.

S1613: The UPF network element sends the flow identification information and the second delay information to the TSN.

For example, the UPF network element may send a stream service receiver preparation message to the TSN, and the stream service receiver preparation message carries the flow identification information and the second delay information.

If S1612 is performed in the communication method, the UPF network element may execute S1613 after receiving the first information from the SMF network element and the first information indicates that the AN device successfully reserves resources for the stream. If the UPF network element does not receive the first information sent by the SMF, the communication method shown in FIG. 17 may be performed.

It should be understood that, in the communication method in the embodiment of the present application, the execution order of S1608 to S1612 is not limited, and for example, it may be located before S1605 or S1604.

FIG. 17 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 17 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 17. In addition, each step in FIG. 17 may be performed in a different order than that presented in FIG. 17, and it is possible that not all operations in FIG. 17 are to be performed.

S1701, the UPF network element sends a stream service provider failure declaration message to the UE, which is used to indicate that the stream service cannot be provided due to bandwidth limitation or other restrictions.

For example, when the UPF network element determines that the UPF network element or the AN device cannot reserve bandwidth resources for the flow, or fails to meet the flow QoS requirements, it may send a flow service provider failure declaration message to the UE.

For example, when a higher-priority stream needs to be transmitted; or when the UE moves to a new base station, the output port corresponding to the UPF network element changes, resulting in the output port exceeding the reservable upper limit; or the PCF does not allow the stream to be reserved When bandwidth resources are reserved, the UPF network element can determine that the QoS requirements of the flow cannot be met.

S1702: The UE initiates a flow service recipient request failure declaration message to the UPF network element.

S1703: The UPF network element forwards the stream service receiver request failure declaration to the stream service provider in the TSN.

The role of the stream service receiver request failure declaration message is to notify the stream service provider in the TSN of the resource reservation failure and the reason for the failure.

It should be understood that the message names shown in FIG. 17 are only examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

As shown in FIG. 19, another application scenario in which the communication method of the embodiment of the present application can be applied may include UE1901, access network device 1902, UPF network element 1903, AMF network element 1904, SMF network element 1905, and PCF network element. 1906. A communication device 1907 and a communication device 1908.

The communication device 1907 and the communication device 1908 may be a streaming service provider or a streaming service receiver in the TSN, respectively. The communication system to which the UE 1901, the access network device 1902, the UPF network element 1903, the AMF network element 1904, the SMF network element 1905, and the PCF network element 1906 belong may be a 3GPP communication system (for example, a 5G communication system). The communication system to which the UE 1901, the access network device 1902, the UPF network element 1903, the AMF network element 1904, the SMF network element 1905, and the PCF network element 1906 belong can serve as a bridge of the TSN.

For example, when the communication device 1907 is the stream service provider in the TSN and the communication device 1908 is the stream service receiver, the UE 1901 can be used as the input port of the TSN bridge, and the UPF network element 1903 can be used as the output port of the TSN bridge; Similarly, when the communication device 1908 serves as the stream service provider in the TSN and the communication device 1907 serves as the stream service receiver, the UPF network element 1903 can serve as the input port of the TSN bridge, and the UE 1901 can serve as the output port of the TSN bridge. . The network element or device in the TSN that communicates with the communication device as the output port in the 3GPP communication system may be referred to as the next hop network element of the communication device in the 3GPP communication system as the output port. Among them, the communication device 1907 may be co-located with the UE 1901.

In the application scenario shown in FIG. 19, it is necessary to calculate a cumulative delay between a streaming service provider and a next-hop network element of a communication device as an output port in a 3GPP communication system. In view of this problem, the present application proposes the following communication method.

FIG. 20 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 20 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 20. In addition, each step in FIG. 20 may be performed in a different order than that presented in FIG. 20, and it is possible that not all operations in FIG. 20 are to be performed.

S2001, the UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message may include Identification information and first delay information of the flow. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2002, the UPF network element sends the first delay information to the UE. Accordingly, the UE receives the first delay information from the UPF network element.

For example, after the UPF network element 1903 receives the broadcast service provider broadcast announcement message from the TSN, it forwards the broadcast service provider broadcast announcement message to the UE 1901. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. Information is sent to UE1901.

S2003: The UE sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UE.

For example, after receiving the broadcast service broadcast message from the UPF network element 1903, the UE 1901 forwards the broadcast service broadcast broadcast message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the UPF network element 1903, the UE 1901 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow. The information is sent to SMF network element 1905.

In S2004, the SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element then sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2004 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2006, the SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UPF network element to the UE.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the SMF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UPF corresponding to the 5QI and the UE as the maximum transmission delay from the UPF to the UE.

Optionally, after obtaining the PCC rule, the SMF network element may trigger a packet data unit (PDU) session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2007, the SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UE.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S2006.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

In S2008, the SMF network element sends the second delay information to the UE, and the second delay information is used to indicate the second delay. Accordingly, the UE receives the second delay information from the SMF network element.

For example, the SMF network element modifies the first delay information of the streaming service provider broadcast announcement message it receives from the UE to the second delay information, and sends the modified streaming service provider broadcast announcement message to the UE.

Alternatively, the SMF network element sends the second delay information to the UE through another message.

S2009, the UE determines the third delay according to the second delay and the second target delay. The second target delay refers to the delay of the stream transmitted from the UE to the target network element in the TSN network as the UE's next hop. The third delay refers to the delay from the flow service provider to the target network element that is the next hop of the UE in the TSN.

For example, the second target delay is the cumulative transmission delay of the flow from the UE 1901 to the target network element that is the UE's next hop; the third delay is the flow from the communication device 108 to the next hop network element Cumulative transmission delay. The next-hop network element may be a communication device 1907 or a communication device between the UE 1901 and the communication device 1907.

An implementation manner in which the UE determines the third delay according to the second delay and the second target delay may include: the UE cumulatively adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UE from the target network element, or may be configured. This embodiment of the present application does not limit the manner in which the UE obtains the second target delay.

In S2010, the UE sends the third delay information to the target network element that is the next hop of the UE in the TSN, and the third delay information is used to indicate the third delay.

For example, the UE modifies the first delay information in the streaming service provider broadcast announcement message it receives from the UPF network element to the third delay information, or the UE changes the first delay information in the streaming service provider broadcast announcement message it receives from the SMF network element. The second delay information is modified into the third delay information, and the modified stream service provider broadcast announcement message is sent to the target network element.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if it is, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 20, the SMF network element learns from the UE the first delay between the flow service provider and the UPF network element, and determines the flow between the UPF network element and the UE according to the PCC rule of the flow. The first target delay of the transmission, and the second delay of the stream from the streaming service provider to the UE is determined according to the first delay and the first target delay, and the second delay is notified to the UE, and then the UE The second target delay between the delay and the flow from the UE to the network element that is the next hop of the UE from the TSN determines the third delay between the flow from the flow service provider to the next hop network element.

It should be understood that the names of the respective messages shown in FIG. 20 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 20 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 20, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 21 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 21 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 21. In addition, each step in FIG. 21 may be performed in a different order than that presented in FIG. 21, and it is possible that not all operations in FIG. 21 are to be performed.

S2101. The UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2102: The UPF network element sends the first delay information to the UE. Accordingly, the UE receives the first delay information from the UPF network element.

For example, after the UPF network element 1903 receives the broadcast service provider broadcast announcement message from the TSN, it forwards the broadcast service provider broadcast announcement message to the UE 1901. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. Information is sent to UE1901.

S2103: The UE sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UE.

For example, after receiving a broadcast service provider broadcast announcement message from the UPF network element 1903, the UE 1901 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries flow information.

For example, after receiving the broadcast service provider broadcast announcement message from the UPF network element 1903, the UE 1901 obtains the flow information in the broadcast service provider broadcast announcement message and sends the stream information to the SMF network element 1905.

S2104: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2104 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2106: The SMF network element sends a quality of service parameter corresponding to the flow to the UE according to the PCC rule. Accordingly, the UE network element receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UE; or the SMF network element sends the QoS corresponding to the flow to the UE Flow identification information.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2107: The UE determines a first target delay according to the quality of service parameter corresponding to the flow. The first target delay refers to a delay in transmitting the flow between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the UE may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI or PDB or Qos flow identification information received from the SMF network element.

For example, if the UE obtains the PDB from the SMF network element, the UE may use the PDB as the first target delay.

For example, if the UE obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UE obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S2108. The UE determines a third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the transmission of the stream from the UE to the TSN network as the target of the next hop of the UE. The delay of the network element. The third delay refers to the delay of the flow from the stream service provider to the target network element that is the next hop of the UE in the TSN.

If the first delay is recorded as Accumulated Latency, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency, then the UE is A possible implementation manner for determining the third delay by the delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

The second target delay may be obtained by the UE from the target network element described above, or may be configured. This embodiment of the present application does not limit the manner in which the UE obtains the second target delay.

S2109: The UE sends third delay information to the target network element, and the third delay information is used to indicate the third delay.

For example, the UE modifies the first delay information in the streaming service provider broadcast announcement message it receives from the UPF network element to the third delay information, and sends the modified streaming service provider broadcast announcement message to the target network element. .

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 21, the SMF network element learns the flow information from the UE, sends the Qos parameter corresponding to the flow to the UE according to the flow information, and sends the QoS parameter to the UE; the UE determines that the flow is in the UPF according to the QoS parameter. The first target delay transmitted between the network element and the UE, and the first delay, the first target delay, and the flow from the UE to the TSN as the UE's The second target delay between the target network elements of the next hop determines a third delay between the flow from the streaming service provider to the target network element.

It should be understood that the names of the respective messages shown in FIG. 21 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 21 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 21, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 22 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 22 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 22. In addition, each step in FIG. 22 may be performed in a different order than that presented in FIG. 22, and it is possible that not all operations in FIG. 22 are to be performed.

S2201, the UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2202, the UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element. In addition, the UPF network element can also send flow information to the SMF network element.

For example, after the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN, it forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. The information is sent to SMF network element 1905.

S2203: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2203 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2205: The SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UPF network element to the UE.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the SMF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UPF corresponding to the 5QI and the UE as the maximum transmission delay from the UPF to the UE.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2206. The SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UE.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S2205.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S2207: The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Accordingly, the UPF network element receives the second delay information from the SMF network element.

For example, the SMF network element modifies the first delay information in the streaming service provider broadcast statement message it receives from the UPF network element to the second delay information, and sends the modified streaming service provider broadcast statement to the UPF network element. Message.

Alternatively, the SMF network element may send the second delay information to the UPF network element in other ways.

S2208: The UPF network element sends the second delay information to the UE. Accordingly, the UE receives the second delay information from the UPF network element.

For example, the UPF network element sends to the UE a stream service provider broadcast announcement message received from the SMF network element, and the stream service provider broadcast announcement message carries the second delay information.

Alternatively, the UPF network element sends the UPF network element to the UE to receive the broadcast service broadcast announcement message from the TSN, and the first delay information in the broadcast service broadcast announcement message is modified to the second delay information.

S2209: The UE determines a third delay according to the second delay and the second target delay. The second target delay refers to a delay in transmitting a stream from the UE to the target network element in the TSN network as the next hop of the UE. The third delay refers to the delay from the flow service provider to the target network element that is the next hop of the UE in the TSN.

For example, the second target delay is the cumulative transmission delay of the flow from the UE 1901 to the target network element that is the UE's next hop; the third delay is the flow from the communication device 108 to the next hop network element Cumulative transmission delay. The next-hop network element may be the communication device 107 or a communication device between the UE 1901 and the communication device 1907.

An implementation manner in which the UE determines the third delay according to the second delay and the second target delay may include: the UE cumulatively adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UE from the target network element, or may be configured. The embodiment of the present application does not limit the manner in which the UE obtains the second target delay.

S2210. The UE sends third delay information to the target network element.

For example, the UE modifies the second delay information in the streaming service provider broadcast announcement message it receives from the UPF network element to the third delay information, and sends the modified streaming service provider broadcast announcement to the target network element. Message.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 22, the SMF network element learns from the UPF network element that the first delay of the flow from the flow service provider to the UPF network element, and determines the flow between the UPF network element and the UE according to the PCC rule of the flow. A first target delay between transmissions, and a second delay for transmitting a stream from a streaming service provider to the UE according to the first delay and the first target delay, and sending the second delay to the UE through a UPF network element; The UE determines the third time between the flow from the stream service provider to the next-hop network element based on the second delay and the second target delay between the flow from the UE to the network element that is the UE's next hop. Delay.

It should be understood that the names of the respective messages shown in FIG. 22 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 22 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 22, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 23 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 23 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 23. In addition, each step in FIG. 23 may be performed in a different order than that presented in FIG. 23, and it is possible that not all operations in FIG. 23 are to be performed.

S2301, the UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2302: The UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries the flow information.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN, obtains the stream information in the stream service provider broadcast announcement message, and sends the stream information to the SMF network element 1905.

S2303: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2303 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2305: The SMF network element sends a quality of service parameter corresponding to the flow to the UPF network element according to the PCC rule. Accordingly, the UPF network element receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UPF network element; or the SMF network element sends the UPF network element QoS flow identification information corresponding to the flow.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2306: The UPF network element determines a first target delay according to the quality of service parameter corresponding to the flow. The first target delay refers to a delay in transmitting the flow between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the UPF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI or PDB or Qos flow identification information received from the SMF network element.

For example, if the UPF network element obtains the PDB from the SMF network element, the PDB may be used as the first target delay.

For example, if the UPF network element obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UPF network element obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S2307. The UPF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UE.

For example, the UPF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast service provider broadcast announcement message and the maximum transmission delay determined in S2306.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S2308: The UPF network element sends the second delay information to the UE. Accordingly, the UE receives the second delay information from the UPF network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message to the UE, where the broadcast service provider broadcast announcement message carries the second delay information.

S2309. The UE determines a third delay according to the second delay and the second target delay. The second target delay refers to a delay in transmitting a stream from the UE to the target network element in the TSN network as the next hop of the UE. The third delay refers to the delay from the flow service provider to the target network element that is the next hop of the UE in the TSN.

For example, the second target delay is the cumulative transmission delay of the flow from the UE 1901 to the target network element that is the UE's next hop; the third delay is the flow from the communication device 108 to the next hop network element Cumulative transmission delay. The next-hop network element may be a communication device 1907 or a communication device between the UE 1901 and the communication device 1907.

An implementation manner in which the UE determines the third delay according to the second delay and the second target delay may include: the UE cumulatively adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UE from the target network element, or may be configured. The embodiment of the present application does not limit the manner in which the UE obtains the second target delay.

S2310: The UE sends third delay information to the target network element.

For example, the UE modifies the second delay information in the streaming service provider broadcast announcement message it receives from the UPF network element to the third delay information, and sends the modified streaming service provider broadcast announcement to the target network element. Message.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 23, the UPF network element learns the QoS parameter corresponding to the flow from the SMF network element, determines the first target delay of the flow transmission between the UPF network element and the UE according to the QoS parameter, and according to the flow slave The first delay and the first target delay transmitted by the stream service provider to the UPF network element determine the second delay of the stream being transmitted from the stream service provider to the UE, and notify the UE of the second delay; The second target delay between the delay and the flow from the UE to the network element that is the next hop of the UE from the TSN determines the third delay between the flow from the flow service provider to the next hop network element.

It should be understood that the names of the respective messages shown in FIG. 23 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 23 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 23, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of 3GPP network and TSN network. Reserved.

FIG. 24 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 24 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 24. In addition, each step in FIG. 24 may be performed in a different order than that presented in FIG. 24, and it is possible that not all operations in FIG. 24 are to be performed.

S2401. The UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2402, the UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element. In addition, the UPF network element can also send flow information to the SMF network element.

For example, after the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN, it forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. The information is sent to SMF network element 1905.

S2403: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2403 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2405. The SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UPF network element to the UE.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the SMF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UPF corresponding to the 5QI and the UE as the maximum transmission delay from the UPF to the UE.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2406. The SMF network element determines the third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the flow from the UE to the TSN network as the next hop of the UE. The delay of the target network element. The third delay refers to the delay of the flow from the stream service provider to the target network element that is the next hop of the UE in the TSN.

If the first delay is recorded as Accumulated Delay1, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency3, the SMF network element is based on the first delay, the first A possible implementation manner of determining the third delay with one target delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

The second target delay may be obtained by the SMF network element from the UE, or may be configured. This embodiment of the present application does not limit the manner in which the SMF network element obtains the second target delay.

S2407: The SMF network element sends the third delay information to the UPF network element. Accordingly, the UPF network element receives the third delay information from the SMF network element.

For example, the SMF network element modifies the first delay information in the streaming service provider broadcast statement message it receives from the UPF network element to the third delay information, and sends the modified streaming service provider broadcast statement to the UPF network element. Message.

Alternatively, the SMF network element may send the third delay information to the UPF network element in other ways.

S2408: The UPF network element sends the third delay information to the UE. Accordingly, the UE receives the third delay information from the UPF network element.

For example, the UPF network element sends to the UE a streaming service provider broadcast announcement message that the UPF network element receives from the SMF network element, and the streaming service provider broadcast announcement message carries third delay information.

S2409: The UE sends third delay information to the target network element.

For example, the UE broadcasts the streaming service provider announcement message it receives from the UPF network element, and the streaming service provider broadcast announcement message carries the third delay information.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 24, the SMF network element learns from the UPF network element the first delay of the flow transmission from the stream service provider to the UPF network element, and determines the first time the flow is transmitted between the UPF network element and the UE. A target delay, and determining the flow from the streaming service provider to the target based on the first delay, the first target delay, and a second target delay between the flow from the UE to the target network element that is the UE ’s next hop in the TSN The third delay between the target network elements.

It should be understood that the names of the respective messages shown in FIG. 24 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 24 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 24, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of 3GPP network and TSN network Reserved.

FIG. 25 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 25 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 25. In addition, each step in FIG. 25 may be performed in a different order than that presented in FIG. 25, and it is possible that not all operations in FIG. 25 are to be performed.

S2501. The UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1908 as a stream service provider to the UPF network element 1903. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2502, the UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries the flow information.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN, obtains the stream information in the stream service provider broadcast announcement message, and sends the stream information to the SMF network element 1905.

S2503, the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2503 is not a required step. These two steps are to implement the PCC rules corresponding to the SMF network element acquisition flow, and the embodiments of the present application do not limit the implementation of the PCC rules corresponding to the SMF network element acquisition flow.

S2505, the SMF network element sends the quality of service parameters corresponding to the flow to the UPF network element according to the PCC rule. Accordingly, the UPF network element receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UPF network element; or the SMF network element sends the UPF network element QoS flow identification information corresponding to the flow.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

The SMF network element may also send a second target delay corresponding to the flow to the UPF network element. The second target delay refers to the delay in transmitting the flow from the UE to the target network element in the TSN network as the next hop of the UE.

S2506: The UPF network element determines a first target delay according to the quality of service parameter corresponding to the flow. The first target delay refers to a delay in transmitting the flow between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the UPF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI or PDB or QoS flow identification information received from the SMF network element.

For example, if the UPF network element obtains the PDB from the SMF network element, the PDB may be used as the first target delay.

For example, if the UPF network element obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UPF network element obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S2507. The UPF network element determines the third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the flow from the UE to the TSN network as the next hop of the UE. The delay of the target network element. The third delay refers to the delay of the flow from the stream service provider to the target network element that is the next hop of the UE in the TSN.

If the first delay is recorded as Accumulated Delay1, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency3, then the UPF network element is based on the first delay, the first A possible implementation manner of determining the third delay with one target delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

The second target delay may be obtained by the SMF network element from the UE, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the SMF network element obtains the second target delay.

S2508: The UPF network element sends the third delay information to the UE. Accordingly, the UE receives the third delay information from the UPF network element.

For example, the UPF network element sends a broadcast service broadcast announcement message received by the UPF network element from the TSN to the UE, and the first delay information in the broadcast service broadcast broadcast message is modified to carry the third delay information.

S2509: The UE sends third delay information to the target network element.

For example, the UE broadcasts the streaming service provider announcement message it receives from the UPF network element, and the streaming service provider broadcast announcement message carries the third delay information.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 25, the UPF network element determines the first target delay of the transmission of the flow between the UPF network element and the UE according to the QoS parameters obtained from the SMF network element, and according to the flow, from the flow service provider to the UPF. The first delay, the first target delay transmitted between the network elements, and the second target delay between the flow from the UE to the target network element in the TSN that is the UE's next hop determine the flow from the flow service provider to the The third delay between target network elements.

It should be understood that the names of the respective messages shown in FIG. 25 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 25 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 25, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of 3GPP network and TSN network. Reserved.

FIG. 26 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 26 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 26. In addition, each step in FIG. 26 may be performed in a different order than that presented in FIG. 26, and it is possible that not all operations in FIG. 26 are to be performed.

S2601: The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1907 as a stream service provider to the UE 1901. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2602: The UE sends the first delay information to the UPF network element. Correspondingly, the UPF network element receives the first delay information from the UE.

For example, the UE forwards the broadcast service broadcast announcement message it receives from the TSN to the UPF network element, and the broadcast service broadcast announcement message carries the first delay information and flow information.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and sends the first delay information and stream information to UPF network element.

S2603: The UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element. In addition, the UPF network element can also send flow information to the SMF network element.

For example, after the UPF network element 1903 receives the broadcast service provider broadcast announcement message from the UE 1901, it forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after the UPF network element 1903 receives the broadcast service provider broadcast announcement message from the UE 1901, it obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and changes the first delay information and stream The information is sent to SMF network element 1905.

S2604: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2604 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2606: The SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UE to the UPF network element.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the SMF network element may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UE corresponding to the 5QI and the UPF as the maximum transmission delay for the stream to be transmitted from the UE to the UPF network element.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2607. The SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UE.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast service broadcast announcement message and the maximum transmission delay determined in S2606.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S2608: The SMF network element sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Accordingly, the UPF network element receives the second delay information from the SMF network element.

For example, the SMF network element modifies the first delay information in the streaming service provider broadcast statement message it receives from the UPF network element to the second delay information, and sends the modified streaming service provider broadcast statement to the UPF network element. Message.

Alternatively, the SMF network element may send the second delay information to the UPF network element in other ways.

S2609, the UPF network element determines the third delay according to the second delay and the second target delay. The second target delay refers to the transmission of the stream from the UPF network element to the TSN network as the target of the next hop of the UPF network element. Network element delay. The third delay refers to the delay from the stream service provider to the target network element that is the next hop of the UPF network element in the TSN.

For example, the second target delay is the cumulative transmission delay of the flow from the UPF network element 1903 to the target network element that is the next hop of the UPF network element 1903; the third delay is the flow from the communication device 107 to the target hop. Cumulative transmission delay between network elements. The target network element may be a communication device 1908 or a communication device between a UPF network element and the communication device 1908.

An implementation manner in which the UPF network element determines the third delay according to the second delay and the second target delay may include: the UPF network element adds the second target delay to the second delay to obtain the third delay . For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UPF network element from the target network element, or may be configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the UPF network element obtains the second target delay.

S2610: The UPF network element sends third delay information to the target network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message it receives from the UE to the target network element, and the first delay information in the broadcast service provider broadcast announcement message is modified to carry the third delay information.

Alternatively, the UPF network element may send a broadcast service provider broadcast announcement message it receives from the SMF network element to the target network element, and the second delay information in the broadcast service provider broadcast declaration message is modified to carry the third delay information .

In the communication method shown in FIG. 26, the SMF network element learns from the UPF network element that the flow has a first delay from the flow service provider to the UE, and determines that the flow is transmitted between the UPF network element and the UE according to the PCC rule of the flow. The first target delay, and determine the second delay for transmitting the stream from the streaming service provider to the UPF network element based on the first delay and the first target delay, and send the second delay to the UPF network element; the UPF network The element determines the flow from the flow service provider to the next hop network element based on the second delay and the second target delay between the flow from the UPF network element to the network element that is the next hop of the UPF network element in the TSN. Third delay.

It should be understood that the names of the respective messages shown in FIG. 26 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 26 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 26, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 27 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 27 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 27. In addition, each step in FIG. 27 may be performed in a different order than that presented in FIG. 27, and it is possible that not all operations in FIG. 27 are to be performed.

S2701: The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1907 as a stream service provider to the UE 1901. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2702: The UE sends the first delay information to the UPF network element. Accordingly, the UE receives the first delay information from the UPF network element.

For example, the UE forwards the broadcast service broadcast message it receives from the TSN to the UPF network element, and the broadcast service broadcast message carries the first delay information. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and sends the first delay information and stream information to UPF network element.

S2703, the UPF network element sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UPF network element.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries the flow information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. The information is sent to SMF network element 1905.

S2704: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2704 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2706: The SMF network element sends a quality of service parameter corresponding to the flow to the UPF network element according to the PCC rule. Accordingly, the UPF network element receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UPF network element; or the SMF network element sends the UPF network element QoS flow identification information corresponding to the flow.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2707: The UPF network element determines a first target delay according to the quality of service parameter corresponding to the flow. The first target delay refers to a delay of the flow transmission between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the UPF network element may determine the maximum transmission delay of the flow from the UE to the UPF network element based on the 5QI or PDB or Qos flow identification information received from the SMF network element.

For example, if the UPF network element obtains the PDB from the SMF network element, the PDB may be used as the first target delay.

For example, if the UPF network element obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UPF network element obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S2708. The UPF network element determines the third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the flow from the UPF network element to the TSN network as the UPF network element. The delay of the target network element of the next hop of the. The third delay refers to the delay of the flow from the stream service provider to the target network element of the next hop of the UPF network element in the TSN.

If the first delay is recorded as Accumulated Delay1, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency3, then the UPF network element is based on the first delay, the first A possible implementation manner of determining the third delay with one target delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

The second target delay may be obtained by the UPF network element from the target network element, or may be configured, or may be obtained by other methods. This embodiment of the present application does not limit the manner in which the UPF network element obtains the second target delay.

S2709: The UPF network element sends third delay information to the target network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message it receives from the UE to the target network element, and the first delay information in the broadcast service provider broadcast announcement message is modified to carry the third delay information.

In the communication method shown in FIG. 27, the UPF network element determines the first target delay of the flow transmission between the UPF network element and the UE according to the QoS parameters obtained from the SMF network element, and the flow service provider to the UE according to the flow. The first delay, the first target delay between transmissions, and the second target delay between the flow from the UPF network element to the target network element in the TSN as the next hop of the UPF network element determine the flow from the flow service provider The third delay to the target network element.

It should be understood that the names of the respective messages shown in FIG. 27 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 27 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 27, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 28 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 28 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 28. In addition, each step in FIG. 28 may be performed in a different order than that presented in FIG. 28, and it is possible that not all operations in FIG. 28 are to be performed.

S2801. The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which the stream transmits the UE 1901 from the communication device 1907 as a stream service provider. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2802: The UE sends first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UE. In addition, the UE can also send flow information to the SMF network element.

For example, after receiving the stream service provider broadcast announcement message from the TSN, the UE 1901 forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE 1901 obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and sends the first delay information and stream information. To SMF network element 1905.

S2803: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2803 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2805, the SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UE to the UPF network element.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the SMF network element may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UE corresponding to the 5QI and the UPF network element as the maximum transmission delay for the stream to be transmitted from the UE to the UPF network element.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2806: The SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UPF network element.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S2805.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S2807: The SMF network element sends the second delay information to the UE, and the second delay information is used to indicate the second delay. Accordingly, the UE receives the second delay information from the SMF network element.

For example, the SMF network element sends to the UE a streaming service provider broadcast announcement message received by the SMF network element from the UE, and the first delay information carried in the broadcast service announcement broadcast message message is modified to the second delay information.

Alternatively, the SMF network element sends the second delay information to the UE through another message.

S2808: The UE sends the second delay information to the UPF network element. Accordingly, the UPF network element receives the second delay information from the UE.

For example, the UE sends to the UPF network element a broadcast service provider broadcast announcement message that the UE receives from the SMF network element, and the first delay information in the broadcast service provider broadcast declaration message is modified to the second delay information.

For example, the UE sends to the UPF network element the UE receives a stream service provider broadcast announcement message from the TSN, and the first delay information in the stream service provider broadcast announcement message is modified to the second delay information received by the UE from the SMF network element .

S2809. The UPF network element determines the third delay according to the second delay and the second target delay. The second target delay refers to the transmission of the stream from the UPF network element to the TSN network as the target of the next hop of the UPF network element. Network element delay. The third delay refers to the delay from the stream service provider to the target network element that is the next hop of the UPF network element in the TSN.

For example, the second target delay is the cumulative transmission delay of the stream from the UPF network element 1903 to the target network element that is the next hop of the UPF network element 1903; the third delay is the flow from the communication device 107 to the next Cumulative transmission delay between hop network elements. The next-hop network element may be a communication device 1908 or a communication device between a UPF network element 1903 and a communication device 1908.

An implementation manner in which the UPF network element determines the third delay according to the second delay and the second target delay may include: the UPF network element adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UPF network element from the target network element, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the UPF network element obtains the second target delay.

S2810. The UPF network element sends third delay information to the target network element.

For example, the UPF network element modifies the second delay information in the streaming service provider broadcast announcement message it receives from the UE to the third delay information, and sends the modified streaming service provider broadcast announcement to the target network element. Message.

In the communication method shown in FIG. 28, the SMF network element learns from the UE the first delay between the flow service provider and the UE, and determines the first time the flow is transmitted between the UPF network element and the UE according to the PCC rule of the flow. A target delay, and a second delay for transmitting a stream from a streaming service provider to a UPF network element according to the first delay and the first target delay, and sending the second delay to the UPF network element through the UE; the UPF network The element determines the flow from the flow service provider to the next hop network element based on the second delay and the second target delay between the flow from the UPF network element to the network element that is the next hop of the UPF network element in the TSN. Third delay.

It should be understood that the names of the respective messages shown in FIG. 28 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 28 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 28, the 3GPP system is regarded as a bridge of the TSN network, and can receive a flow reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

FIG. 29 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 29 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 29. In addition, each step in FIG. 29 may be performed in a different order than that presented in FIG. 29, and it is possible that not all operations in FIG. 29 are to be performed.

S2901: The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1907 as a stream service provider to the UE 1901. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S2902: The UE sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UE.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE 1901 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries the flow information.

For example, after receiving a stream service provider broadcast announcement message from the TSN, the UE 1901 obtains information about the stream in the stream service provider broadcast announcement message, and sends the stream information to the SMF network element 1905.

S2903: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S2903 is not a necessary step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S2905, the SMF network element sends a quality of service parameter corresponding to the flow to the UE according to the PCC rule. Accordingly, the UE receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UE; or the SMF network element sends the QoS corresponding to the flow to the UE Flow identification information.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S2906: The UE determines a first target delay according to a quality of service parameter corresponding to the flow. The first target delay refers to a delay in transmitting the flow between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the UE may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI or PDB or Qos flow identification information received from the SMF network element.

For example, if the UE obtains the PDB from the SMF network element, the UE may use the PDB as the first target delay.

For example, if the UE obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UE obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S2907: The UE determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UPF network element.

For example, the UE element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S2906.

If the first delay is recorded as Accumulated Latency 1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency 2, then Accumulated Latency 2 = Accumulated Latency 1 + T1.

S2908: The UE sends the second delay information to the UPF network element. Accordingly, the UPF network element receives the second delay information from the UE.

For example, the UE sends a modified broadcast service provider broadcast announcement message to the UPF network element, and the first delay information carried in the broadcast service provider broadcast announcement message is modified to the second delay information.

S2909. The UPF network element determines the third delay according to the second delay and the second target delay. The second target delay refers to the flow from the UPF network element to the TSN network as the target of the next hop of the UPF network element. Network element delay. The third delay refers to the delay from the stream service provider to the target network element that is the next hop of the UPF network element in the TSN.

For example, the second target delay is the cumulative transmission delay of the stream from the UPF network element 1903 to the target network element that is the next hop of the UPF network element 1903; the third delay is the flow from the communication device 107 to the next Cumulative transmission delay between hop network elements. The next-hop network element may be the communication device 108 or a communication device between the UPF network element 1903 and the communication device 1908.

An implementation manner in which the UPF network element determines the third delay according to the second delay and the second target delay may include: the UPF network element adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UPF network element from the target network element, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the UPF network element obtains the second target delay.

S2910, the UPF network element sends third delay information to the target network element.

For example, the UPF network element modifies the second delay information in the streaming service provider broadcast announcement message it receives from the UE to the third delay information, and sends the modified streaming service provider broadcast announcement to the target network element. Message.

In the communication method shown in FIG. 29, a UE determines a first target delay of a flow transmitted between a UPF network element and the UE, and according to the flow, the first delay and the first target time between the flow service provider and the UE. The delay determines the second delay of the flow from the stream service provider to the UPF network element and sends the second delay to the UPF network element; the UPF network element acts as the UPF network from the UPF network element to the TSN according to the second delay and flow The second target delay between the next hop network elements of the element determines the third delay between the flow from the streaming service provider to the next hop network element.

It should be understood that the names of the respective messages shown in FIG. 29 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 29 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple, because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 29, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of 3GPP network and TSN network Reserved.

FIG. 30 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 30 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 30. In addition, each step in FIG. 30 may be performed in a different order than that presented in FIG. 30, and it is possible that not all operations in FIG. 30 are to be performed.

S3001: The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which the stream transmits the UE 1901 from the communication device 1907 as a stream service provider. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S3002: The UE sends first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UE. In addition, the UE can also send flow information to the SMF network element.

For example, after receiving the stream service provider broadcast announcement message from the TSN, the UE 1901 forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE 1901 obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and sends the first delay information and stream information. To SMF network element 1905.

S3003, the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S3003 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S3005, the SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UE to the UPF network element.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the SMF network element may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UE corresponding to the 5QI and the UPF network element as the maximum transmission delay for the stream to be transmitted from the UE to the UPF network element.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S3006, the SMF network element determines the third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the flow from the UPF network element to the TSN network as the UPF network element. The delay of the target network element of the next hop of the. The third delay refers to the delay of the flow from the stream service provider to the target network element of the next hop of the UPF network element in the TSN.

If the first delay is recorded as Accumulated Delay1, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency3, the SMF network element is based on the first delay, the first A possible implementation manner of determining the third delay with one target delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

The second target delay may be obtained by the SMF network element from the UPF network element, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the SMF network element obtains the second target delay.

S3007. The SMF network element sends the third delay information to the UE. Accordingly, the UE receives the third delay information from the SMF network element.

For example, the SMF network element sends a broadcast service provider broadcast announcement message received by the SMF network element from the UE to the UE, and the first delay information in the broadcast service provider broadcast declaration message is modified to the third delay information.

Alternatively, the SMF network element sends the second delay information to the UE through another message.

S3008: The UE network element sends third delay information to the UPF network element. Accordingly, the UPF network element receives the third delay information from the UE.

For example, the UE sends to the UPF network element a broadcast service provider broadcast announcement message that the UE receives from the SMF network element, and the stream service provider broadcast announcement message carries third delay information.

Alternatively, the UE changes the first delay information in the streaming service provider broadcast announcement message it receives from the TSN network to the third delay information, and sends the modified streaming service provider broadcast announcement message to the UPF network element.

S3009: The UPF network element sends third delay information to the target network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message it receives from the UE to the target network element, and the stream service provider broadcast announcement message carries the third delay information.

In the communication method shown in FIG. 30, the SMF network element learns from the UE the first delay of the stream transmission from the stream service provider to the UE, and determines the first target delay of the stream transmission between the UE and the UPF network element. And determine the flow from the flow service provider to the second target delay between the first delay, the first target delay, and the flow from the UPF network element to the target network element in the TSN that is the next hop of the UPF network element. The third delay between the target network elements.

It should be understood that the names of the respective messages shown in FIG. 30 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 30 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 30, the 3GPP system is regarded as a bridge of the TSN network, and can receive a flow reservation protocol message (SRP message) from the previous hop node of the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network Reserved.

FIG. 31 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 31 shows steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 31. In addition, each step in FIG. 31 may be performed in a different order than that presented in FIG. 31, and it is possible that not all operations in FIG. 31 are to be performed.

S3101. The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the streaming service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1907 as a stream service provider to the UE 1901. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S3102: The UE sends flow information to the SMF network element. Accordingly, the SMF network element receives the flow information from the UE.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE 1901 forwards the broadcast service provider broadcast announcement message to the SMF network element 1905, and the stream service provider broadcast announcement message carries the flow information.

For example, after receiving the broadcast service provider broadcast announcement message from the TSN, the UE obtains the flow information in the broadcast service provider broadcast announcement message, and sends the stream information to the SMF network element 1905.

S3103: The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The information of the flow may include identification information of the flow and the like. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S3103 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S3105, the SMF network element sends the quality of service parameters corresponding to the flow to the UE according to the PCC rule. Accordingly, the UE receives the quality of service parameter from the SMF network element.

For example, the SMF network element determines the 5QI corresponding to the flow according to the PCC rules, or determines the PDB between the UPF network element and the UE according to the PCC rules, and sends the 5QI or the PDB to the UE; or the SMF network element sends the QoS corresponding to the flow to the UE Flow identification information.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

The SMF network element may also send a second target delay corresponding to the flow to the UE. The second target delay refers to the delay in transmitting the flow from the UPF network element to the target network element as the next hop of the UPF network element in the TSN network. The second target delay may be obtained by the SMF network element from the UPF network element, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the SMF network element obtains the second target delay.

S3106: The UE determines a first target delay according to the quality of service parameter corresponding to the flow. The first target delay refers to a delay in transmitting the flow between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the UE may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI or PDB or Qos flow identification information received from the SMF network element.

For example, if the UE obtains the PDB from the SMF network element, the UE may use the PDB as the first target delay.

For example, if the UE obtains the QoS flow identification information from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the QoS flow identification information, and use the PDB as the first target delay.

For example, if the UE element obtains the 5QI corresponding to the flow from the SMF network element, it may obtain the PDB in the corresponding QoS parameter according to the 5QI, and use the PDB as the first target delay.

S3107. The UE determines the third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the transmission of the stream from the UPF network element to the TSN network as the next UPF network element. The delay of the one-hop target network element. The third delay refers to the delay of the flow from the stream service provider to the target network element that is the next hop of the UPF network element in the TSN.

If the first delay is recorded as Accumulated Latency, the first target delay is recorded as T1, the second target delay is recorded as T2, and the third delay is recorded as Accumulated Latency, then the UE is A possible implementation manner for determining the third delay by the delay and the second target delay is as follows: AccumulatedLatency3 = AccumulatedLatency1 + T1 + T2.

S3108: The UE network element sends third delay information to the UPF network element. Accordingly, the UPF network element receives the third delay information from the UE.

For example, the UE sends, to the UPF network element, the streaming service provider broadcast announcement message that the UE receives from the TSN, and the streaming service provider broadcast announcement message carries the third delay information.

S3109: The UPF network element sends third delay information to the target network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message it receives from the UE to the target network element, and the stream service provider broadcast announcement message carries the third delay information.

In the communication method shown in FIG. 31, the SMF network element learns the flow information from the UE, sends the Qos parameter corresponding to the flow to the UE according to the flow information, and sends the QoS parameter to the UE; the UE determines that the flow is on the UE according to the QoS parameter The first target delay transmitted between the UPF network element and the first delay, the first target delay, and the flow transmitted from the UPF network element to the TSN as the UPF network according to the flow from the streaming service provider to the UE The second target delay between the target network elements of the next hop of the element determines the third delay between the flow from the streaming service provider to the target network element.

It should be understood that the names of the respective messages shown in FIG. 31 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 31 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 31, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network Reserved.

FIG. 32 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 32 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or a modification of each operation in FIG. 32. In addition, each step in FIG. 32 may be performed in a different order than that presented in FIG. 32, and it is possible that not all operations in FIG. 32 are to be performed.

S3201. The UPF network element receives the first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to the transmission of the stream from the stream service provider in the TSN to the UPF network element. Cumulative delay.

For example, the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN as the previous hop of the UPF network element 1903. This message can be used to broadcast a flow and the QoS requirements corresponding to the flow. The message includes the flow. Identification information and first delay information. At this time, the first delay refers to the cumulative delay of the stream transmitting the UPF network element 1903 from the communication device 1908 as the stream service provider. The previous hop network element of the UPF network element 1903 may be a communication device 1908, or may be a device or a network element between the UPF network element 1903 and the communication device 1908.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S3202, the UPF network element sends the first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UPF network element. In addition, the UPF network element can also send flow information to the SMF network element.

For example, after the UPF network element 1903 receives the stream service provider broadcast announcement message from the TSN, it forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving the broadcast service announcement message from the TSN, the UPF network element 1903 obtains the first delay information and the flow information in the broadcast service provider broadcast declaration message, and changes the first delay information and the flow information. The information is sent to SMF network element 1905.

S3203, the SMF network element obtains the PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S3203 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S3205, the SMF network element determines the first target delay according to the PCC rule corresponding to the flow. The first target delay refers to the transmission delay of the flow from the UPF network element to the UE.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UPF network element and the UE.

An example of the first target delay may be the maximum transmission delay of the flow from the UPF network element to the UE. For example, the SMF network element may determine the maximum transmission delay of the flow from the UPF network element to the UE according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UPF network element corresponding to the 5QI and the UE as the maximum transmission delay for the stream to be transmitted from the UPF network element to the UE.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S3206. The SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UPF network element.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S3205.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S3207: The SMF network element sends the second delay information to the UE, and the second delay information is used to indicate the second delay. Accordingly, the UE receives the second delay information from the SMF network element.

For example, the SMF network element sends to the UE a streaming service provider broadcast announcement message received by the SMF network element from the UE, and the first delay information carried in the broadcast service announcement broadcast message message is modified to the second delay information.

Alternatively, the SMF network element may send the second delay information to the UE in another manner.

S3208. The UE determines a third delay according to the second delay and the second target delay. The second target delay refers to a delay in transmitting a stream from the UE to the target network element in the TSN network as the next hop of the UE. The third delay refers to the delay from the flow service provider to the target network element that is the next hop of the UE in the TSN.

For example, the second target delay is the cumulative transmission delay of the target network element from the UE 1901 to the TSN as the next hop of the UE; the third delay is the delay from the communication device 108 to the next hop network element. Cumulative transmission delay. The next-hop network element may be a communication device 1907 or a communication device between the UE 1901 and the communication device 1907.

An implementation manner in which the UE determines the third delay according to the second delay and the second target delay may include: the UE cumulatively adds the second target delay to the second delay. For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UE from the target network element, or configured, or obtained by other methods. The embodiment of the present application does not limit the manner in which the UE obtains the second target delay.

S3209: The UE sends third delay information to the target network element.

For example, the UE modifies the second delay information in the streaming service provider broadcast announcement message it receives from the SMF network element to the third delay information, and sends the modified streaming service provider broadcast announcement to the target network element. Message.

If the target network element is a recipient of a stream service, the target network element may determine whether the stream is interested, and if interested, determine whether the third delay can meet the delay requirement of the stream. If it can be satisfied, send the third delay information to the UE.

For example, the target network element sends a stream service receiver preparation message to the UE, and the stream service receiver preparation message includes flow identification information and third delay information. The UE may then forward the stream service receiver preparation message to the UPF network element, and the UPF network element forwards the stream service receiver preparation message to the next hop network element of the UPF network element in the TSN.

In the communication method shown in FIG. 32, the SMF network element learns the first delay between the flow service provider and the UE from the UPF network element, and determines that the flow is transmitted between the UPF network element and the UE according to the PCC rule of the flow. The first target delay, and determine the second delay for transmitting the stream from the streaming service provider to the UE according to the first delay and the first target delay, and send the second delay to the UE; the UE according to the second delay The second target delay between the flow from the UE to the network element that is the next hop of the UE in the TSN determines the third delay between the flow from the flow service provider to the next hop network element.

It should be understood that the names of the respective messages shown in FIG. 32 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 32 can not only obtain the accumulated delay of the stream transmitted from the streaming service provider to the target network element as the UE's next hop in the TSN network, but also the method of obtaining the accumulated delay is simpler because the communication The method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the master clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 32, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of 3GPP network and TSN network Reserved.

FIG. 33 is a schematic flowchart of a communication method according to an embodiment of the present application. It should be understood that FIG. 33 shows the steps or operations of the communication method, but these steps or operations are merely examples, and the embodiment of the present application may also perform other operations or a modification of each operation in FIG. 33. In addition, each step in FIG. 33 may be performed in a different order than that presented in FIG. 33, and it is possible that not all operations in FIG. 33 are to be performed.

S3301: The UE receives first delay information from the TSN. The first delay information is used to indicate the first delay. The first delay refers to a cumulative delay in which the stream is transmitted from the stream service provider in the TSN to the UE.

For example, UE1901 receives a stream service provider broadcast announcement message from the TSN as the previous hop of the UE1901. This message can be used to broadcast a stream and the QoS requirements corresponding to the stream. The message includes the flow identification information and First delay information. At this time, the first delay refers to a cumulative delay in which a stream is transmitted from the communication device 1907 as a stream service provider to the UE 1901. The previous hop network element of the UE 1901 may be a communication device 1907, or may be a device or a network element between the UE 1901 and the communication device 1907.

Optionally, the message may further include one or more of the following information: destination address, source address, maximum frame size, maximum frame interval, frame priority, and a single frame of the stream is transmitted from the stream service provider to the stream The maximum allowable delay of the service receiver, the reliability requirement of the flow, or the reason for the failure of resource reservation.

It should be understood that, in the embodiments of the present application, for the convenience of description, information other than the first delay information in the information related to the stream is referred to as the information of the stream. For example, you can transfer the destination address, source address, maximum frame size, maximum frame interval, frame priority, frame's priority, and maximum allowable delay for a single frame of a stream from the stream service provider to the stream service receiver. The reliability requirements, reasons for resource reservation failure, flow identification, or flow QoS parameters are called flow information.

S3302: The UE sends first delay information to the SMF network element. Accordingly, the SMF network element receives the first delay information from the UE. In addition, the UE can also send flow information to the SMF network element.

For example, after receiving the stream service provider broadcast announcement message from the TSN, the UE 1901 forwards the stream service provider broadcast announcement message to the SMF network element 1905. The stream service provider broadcast announcement message carries first delay information and stream information.

For example, after receiving a broadcast service provider broadcast announcement message from the TSN, the UE 1901 obtains the first delay information and stream information in the broadcast service provider broadcast announcement message, and sends the first delay information and stream information. To SMF network element 1905.

S3303. The SMF network element obtains a PCC rule corresponding to the flow from the PCF network element.

For example, the SMF network element sends flow information to the PCF network element. The flow information may include flow identification information or flow QoS parameters. Accordingly, the PCF network element receives the flow information from the SMF network element.

The PCF network element sends the PCC rule corresponding to the flow to the SMF network element. Accordingly, the SMF network element receives the PCC rule corresponding to the flow from the PCF network element.

It should be understood that S3303 is not a required step. This step is to implement the PCC rule corresponding to the SMF network element acquisition flow, and the embodiment of the present application does not limit the implementation of the PCC rule corresponding to the SMF network element acquisition flow.

S3305, the SMF network element determines a first target delay according to the PCC rule corresponding to the flow. The first target delay refers to a transmission delay of the flow from the UE to the UPF network element.

In the embodiment of the present application, the first target delay may also be referred to as a cumulative delay of the flow transmission between the UE and the UPF network element.

An example of the first target delay may be the maximum transmission delay of the flow from the UE to the UPF network element. For example, the SMF network element may determine the maximum transmission delay of the flow from the UE to the UPF network element according to the 5QI in the PCC rule. For example, the SMF network element may use the PDB between the UPF corresponding to the 5QI and the UE as the maximum transmission delay for the stream to be transmitted from the UE to the UPF.

Optionally, after obtaining the PCC rules, the SMF network element may trigger a PDU session modification process, so as to establish a QoS flow for the flow and implement resource reservation for the flow.

S3306. The SMF network element determines a second delay according to the first delay and the first target delay. The second delay refers to a transmission delay of the stream from the stream service provider to the UE.

For example, the SMF network element determines the second delay according to the first delay indicated by the first delay information carried in the broadcast announcement message of the streaming service provider and the maximum transmission delay determined in S3305.

If the first delay is recorded as Accumulated Latency1, the first target delay is recorded as T1, and the second delay is recorded as Accumulated Latency2, then AccumulatedLatency2 = AccumulatedLatency1 + T1.

S3307: The SMF network element sends the second delay information to the UPF network element, and the second delay information is used to indicate the second delay. Accordingly, the UPF network element receives the second delay information from the SMF network element.

For example, the SMF network element sends a modified stream service provider broadcast announcement message to the UPF network element, and the first delay information carried in the modified stream service provider broadcast announcement message is modified to the second delay information.

Alternatively, the SMF network element may send the second delay information to the UPF network element in other ways.

S3308. The UPF network element determines the third delay according to the second delay and the second target delay. The second target delay refers to the transmission of the stream from the UPF network element to the TSN network as the target of the next hop of the UPF network element. Network element delay. The third delay refers to the delay from the stream service provider to the target network element that is the next hop of the UPF network element in the TSN.

For example, the second target delay is the cumulative transmission delay of the flow from the UPF network element 1903 to the target network element that is the next hop of the UPF network element 1903; the third delay is the flow from the communication device 1907 to the target hop. Cumulative transmission delay between network elements. The target network element may be a communication device 1908 or a communication device between a UPF network element and the communication device 1908.

An implementation manner in which the UPF network element determines the third delay according to the second delay and the second target delay may include: the UPF network element adds the second target delay to the second delay to obtain the third delay . For example, if the second target delay is recorded as T2, the second delay is recorded as AccumulatedLatency2, and the third delay is recorded as AccumulatedLatency3, then AccumulatedLatency3 = AccumulatedLatency2 + T2.

The second target delay may be obtained by the UPF network element from the target network element, or configured, or obtained by other methods. This embodiment of the present application does not limit the manner in which the UPF network element obtains the second target delay.

S3309: The UPF network element sends third delay information to the target network element.

For example, the UPF network element sends a broadcast service provider broadcast announcement message it receives from the UE to the target network element, and the first delay information carried in the broadcast service announcement broadcast message is modified to carry the third delay information.

In the communication method shown in FIG. 33, the SMF network element learns from the UE the first delay between the stream service provider and the UE, and determines the first time the stream is transmitted between the UE and the UPF network element according to the PCC rule of the stream. A target delay, and a second delay for transmitting a stream from a streaming service provider to a UPF network element based on the first delay and the first target delay, and sending the second delay to the UPF network element; the UPF network element is based on The second target delay and the second target delay between the flow from the UPF network element to the network element that is the next hop of the UPF network element in the TSN determine the first flow between the flow service provider and the next hop network element. Three delays.

It should be understood that the names of the respective messages shown in FIG. 33 are merely examples. As long as the messages capable of implementing the corresponding functions in the communication method belong to the protection scope of the embodiment of the present application.

The communication method shown in FIG. 33 can not only obtain the accumulated delay of the stream transmitted from the stream service provider to the target network element as the next hop of the UPF network element in the TSN network, but also the method of obtaining the accumulated delay is relatively simple because This communication method makes it unnecessary for the UE, the UPF network element, and each device between the UE and the UPF network element to synchronize with the main clock source, and the cumulative delay can also be calculated.

In addition, in the communication method shown in FIG. 33, the 3GPP system is regarded as a bridge of the TSN network, and can receive a stream reservation protocol message (SRP message) from the previous hop node in the TSN network as the bridge, and Provides a method for processing SRP messages, and sends the SRP message to the TSN as the next hop node of the bridge, so that the latency requirements of the URLLC service flow and the bandwidth resources can be guaranteed in the interworking scenario of the 3GPP network and the TSN network. Reserved.

In any of the communication methods shown in FIG. 20 to FIG. 33, optionally, it may further include: the SMF network element sends the bandwidth requirement information of the flow to the UPF network element. Accordingly, the UPF network element receives the bandwidth requirement information of the flow from the SMF network element, and reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element can send the flow bandwidth demand message to the UPF network element, so that the UPF network element reserves the flow according to the bandwidth demand information. Bandwidth resources, so that when the stream is transmitted to the UPF network element, the UPF network element can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

Optionally, any of the communication methods shown in FIG. 20 to FIG. 33 may further include: the SMF network element sends the bandwidth requirement information of the flow to the access network device corresponding to the UE. Correspondingly, the access network device receives the bandwidth demand information and reserves bandwidth for the flow according to the bandwidth demand information.

In other words, when the SMF network element determines that it can reserve bandwidth resources for the flow, the SMF network element may send a flow bandwidth demand message to the access network device serving the UE, so that the access network device may The bandwidth requirement information reserves bandwidth resources for the stream, so that the access network can have corresponding bandwidth resources to transmit the stream, which can further improve the transmission reliability of the stream.

Optionally, in a case where the SMF network element sends the bandwidth requirement information of the flow to the access network device corresponding to the UE, in any of the communication methods shown in FIG. 20 to FIG. 33, the SMF network element may further include: The first information is received, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.

For example, the SMF network element may detect whether the first information is received from the access network device before sending any delay information to the UE or the UPF network element. If the SMF network element receives the first information and the first information indicates that the AN device successfully reserves resources for the stream, the SMF network element may send the delay information to the UE or the UPF network element, otherwise, the SMF network element may not The UE or the UPF network element sends the delay information that needs to be sent.

In this implementation manner, the SMF network element performs subsequent related operations only after determining that the access network device can successfully reserve bandwidth resources for the flow, which can improve the execution efficiency of the SMF network element.

FIG. 18 is a schematic structural diagram of a communication device according to an embodiment of the present application. It should be understood that the communication device 1800 shown in FIG. 18 is merely an example, and the communication device in the embodiment of the present application may further include other modules or units, or include modules similar in function to each module in FIG. All modules in 18.

The communication device 1800 shown in FIG. 18 may include a receiving module 1810, a processing module 1820, and a sending module 1830. Each module included in the communication device 1800 may be implemented in software and / or hardware.

For example, the receiving module 1810 may be a receiver, the sending module 1830 may be a transmitter, and the processing module 1820 may be a processor, wherein the receiver and the transmitter may be integrated together, which is called a transceiver.

As another example, the processing module 1820 may be a processor, and the receiving module 1810 and the sending module 1830 may be communication interfaces. In this case, the communication device 1800 may be a chip.

Optionally, the communication device 1800 may further include a memory for storing a program code executed by the processor.

In a possible implementation manner, the communication device 1800 may be configured to perform steps performed by the SMF network element in the communication method described in any one of FIG. 2 to FIG. 7.

In this case, the communication device may be an SMF network element, or may be a chip capable of being integrated in the SMF network element.

For example, the communication device 1800 may receive first delay information of a stream from a UPF network element through the receiving module 1810, where the first delay information is used to instruct the stream to be transmitted from a stream service provider in the TSN to the stream. The first delay of the UPF network element; the third delay of the transmission of the stream from the UPF network element to the UE is determined by the processing module 1820 according to the PCC rule of the flow; and the processing module 1820 according to the A first delay and the third delay, determining a second delay in which the stream is transmitted from the stream service provider in the TSN to the UE; to the UPF network through the sending module 1830 Yuan sends second delay information, and the second delay information is used to indicate the second delay.

Optionally, the third delay may be a maximum transmission delay of the flow transmission from the UPF network element to the UE.

Optionally, the sum of the first delay and the third delay may be specifically determined as the second delay by the processing module.

Optionally, the processing module may determine that the bandwidth resource can be reserved for the flow according to the PCC rule.

Optionally, the bandwidth requirement information of the flow may be sent to the UPF network element through the sending module.

Optionally, the bandwidth requirement information of the stream may be sent to the access network device corresponding to the UE through the sending module.

Optionally, the receiving module may receive first information from the access network device, and the first information is used to instruct the access network device to reserve the flow according to the bandwidth requirement information of the flow. Bandwidth resource succeeded.

Optionally, the flow information may be sent to a PCF network element through the sending module, and the flow information is used to determine a PCC rule of the flow; and the receiving module receives the flow information from the PCF network element through the receiving module. The PCC rules are described.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames, the priority of the stream, the maximum allowable delay for a single frame of the stream to be transmitted from the stream service provider to the receiver of the stream service, or the reliability requirements of the stream.

In some other possible implementation manners, the communication device 1800 may be configured to execute steps performed by the SMF network element in the communication method described in any one of FIG. 8 to FIG. 10. In this case, the communication device 1800 may be an SMF network element, or may be a chip capable of being integrated in the SMF network element.

For example, the communication device 1800 may receive the first delay information of the flow from the UE through the receiving module 1810, where the first delay information is used to indicate the first delay; and the processing module 1820 determines the flow according to the PCC rule of the flow. The maximum transmission delay of the flow from the UE to the UPF network element; the processing module 1820 determines the transmission of the flow from the UE to the UPF network element according to the first delay and the maximum transmission delay Sending a second delay information to the UPF network element through a sending module 1830, where the second delay information is used to indicate the second delay.

Optionally, the first delay and the maximum transmission delay may be specifically added through the processing module 1820, and a transmission delay in which the stream is transmitted from the UE to the UPF network element may be subtracted The value obtained by using the default value of is determined as the second delay.

Optionally, the processing module may determine that the bandwidth resource can be reserved for the flow according to the PCC rule.

Optionally, the bandwidth requirement information of the flow may be sent to the UPF network element through the sending module 1830.

Optionally, the bandwidth requirement information of the stream may be sent to the access network device corresponding to the UE through the sending module 1830.

Optionally, first information may be received from the access network device through the receiving module 1810, where the first information is used to instruct the access network device to prepare the flow according to the bandwidth requirement information of the flow. Reserve bandwidth resources successfully.

Optionally, the flow information may be sent to the PCF network element through the sending module 1830, and the flow information is used for determining the PCC rule of the flow; the SMF network element receives the flow information from the PCF network element. The PCC rules are described.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames or the priority of the stream.

In some other possible implementation manners, the communication device 1800 may be configured to execute steps performed by the SMF network element in the communication method described in any one of FIG. 11 to FIG. 13. In this case, the communication device 1800 may be an SMF network element, or may be a chip capable of being integrated in the SMF network element.

For example, the communication device 1800 may receive stream information from the UE through the receiving module 1810; and the processing module 1820 determines that the stream is transmitted from the UE to the user plane function according to the stream information and the PCC rule of the stream The maximum transmission delay of the UPF network element; sending first delay information to the UE through the sending module 1830, where the first delay information is used to indicate the maximum transmission delay.

Optionally, the information of the stream may include one or more of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame used to transmit the stream, and The interval between frames of the flow, the priority of the flow, and the delay information transmitted by the UE from the UE to the UPF network element.

Optionally, the processing module 1820 may determine that the UPF network element can reserve bandwidth resources for the flow according to the PCC rule.

Optionally, the bandwidth requirement information of the flow may be sent to the UPF network element through the sending module 1830.

Optionally, the bandwidth requirement information of the stream may be sent to the access network device corresponding to the UE through the sending module 1830.

Optionally, first information may be received from the access network device through the receiving module 1810, where the first information is used to instruct the access network device to prepare the flow according to the bandwidth requirement information of the flow. Reserve bandwidth resources successfully.

Optionally, the flow information may be sent to a PCF network element through the sending module 1830, and the flow information is used to determine a PCC rule for the flow; and the receiving module 1810 is used to determine Receive the PCC rule.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames or the priority of the stream.

In some other possible implementation manners, the communication device 1800 may be configured to execute steps performed by a UPF network element in the communication method described in any one of FIG. 2 to FIG. 7. In this case, the communication device 1800 may be a UPF network element, or may be a chip capable of being integrated in the UPF network element.

For example, the communication device 1800 may receive first delay information of a stream from a TSN through the receiving module 1810, and the first delay information is used to instruct the stream to be transmitted from a stream service provider in the TSN to the stream. The first delay of the UPF network element; sending the first delay information to the SMF network element through the sending module 1830, where the first delay information is used for determining a second delay, and the second delay A time delay for the stream to be transmitted from the stream service provider in the TSN network to a terminal device UE; and receiving second delay information from the SMF network element through the receiving module 1810, the second time The delay information is used to indicate the second delay; the second delay information is sent to the UE through the sending module 1830.

Optionally, the bandwidth requirement information of the flow may be received from the SMF network element through the receiving module 1810; and the processing module 1820 may reserve bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, first information may be received from the SMF network element through the receiving module, and the first information is used to instruct an access network device corresponding to the UE to provide the stream according to the bandwidth requirement information of the stream. The bandwidth resource reservation was successful.

In some other possible implementation manners, the communication device 1800 may be configured to execute steps performed by the UE in the communication method described in any one of FIG. 8 to FIG. 10. In this case, the communication device 1800 may be a UE, or may be a chip capable of being integrated in the UE.

For example, the communication device 1800 may send stream information to an SMF network element through the sending module 1830, and the stream information is used to determine a maximum transmission delay of the stream from the UE to the UPF network element; The receiving module 1810 receives first delay information from the SMF network element, and the first delay information is used to indicate the maximum transmission delay; and the processing module 1810 determines the maximum transmission delay according to the maximum transmission delay. The target delay of the stream being transmitted from the UE to the UPF network element; and sending the second delay information to the UPF network element through the sending module 1830, where the second delay information is used to indicate the target delay .

In some other possible implementation manners, the communication device 1800 may be configured to execute steps performed by a UPF network element in the communication method described in any one of FIG. 14 to FIG. 17. In this case, the communication device 1800 may be a UPF network element, or may be a chip capable of being integrated in the UPF network element.

For example, the communication device 1800 may receive the first delay information of the stream from the TSN through the receiving module 1810, and the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the UPF network. The first delay of the element; sending the flow information to the SMF network element through the sending module 1830, the flow information is used to determine the third delay of the flow from the UPF network element to the UE; The processing module 1820 receives third delay information from the SMF network element, and the third delay information is used to indicate the third delay; and the processing module 1820 uses the first delay and the The third delay, determining a second delay in which the stream is transmitted from the stream service provider in the TSN network to the UE; and sending the second delay information to the UE through the sending module 1830 , The second delay information is used to indicate the second delay.

Optionally, the processing module 1820 may specifically determine the sum of the first delay and the third delay as the second delay.

Optionally, the bandwidth requirement information of the flow may be received from the SMF network element through the receiving module 1810; and the processing module 1820 may reserve bandwidth resources for the flow according to the bandwidth requirement information of the flow.

Optionally, first information is received from the SMF network element through the receiving module 1810, where the first information is used to instruct an access network device corresponding to the UE to provide the stream according to the bandwidth requirement information of the stream. The bandwidth resource reservation was successful.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames, the priority of the stream, the maximum allowable delay for a single frame of the stream to be transmitted from the stream service provider to the receiver of the stream service, or the reliability requirements of the stream.

In another possible implementation manner, the communication device 1800 may be configured to execute the steps performed by the SMF network element in the communication method described in FIG. 24 or FIG. 30. In this case, the communication device may be an SMF network element, or may be a chip capable of being integrated in the SMF network element.

For example, the communication device 1800 may receive the first delay information of the stream from the first communication device through the receiving module 1810, where the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the first A first delay of a communication device; determining a first target delay of the flow from the first communication device to a second communication device by the processing module 1820 according to the PCC rule of the flow; The first delay, the first target delay, and the second target delay are used to determine a target of the stream to be transmitted from the streaming service provider to the TSN as a next hop of the second communication device. A third delay of the network element, and the second target delay is a delay in which the stream is transmitted from the second communication device to the target network element; sending the first delay to the first communication device through the sending module 1830 Three delay information, the third delay information is used to indicate the third delay; wherein the first communication device is a UPF network element and the second communication device is a UE; or The communication device is the UE and the second communication device is the UPF NE.

Optionally, the processing module 1820 specifically uses the sum of the first delay, the first target delay, and the second target delay as the third delay.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

Optionally, it is further determined by the processing module 1820 that the bandwidth resource can be reserved for the flow according to the PCC rule.

Optionally, the bandwidth requirement information of the flow is also sent to the UPF network element through a sending module 1830.

Optionally, the bandwidth requirement information of the stream is also sent to the access network device corresponding to the UE through the sending module 1830.

Optionally, first information is further received from the access network device through a receiving module 1810, where the first information is used to instruct the access network device to reserve bandwidth for the flow according to the bandwidth requirement information of the flow Whether the resource was successful.

Optionally, the flow information is also sent to the PCF network element through a sending module, and the flow information is used for determining a PCC rule of the flow; the PCC is also received from the PCF network element through a receiving module 1810. rule.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames, the priority of the stream, the maximum allowable delay in transmitting a single frame of the stream from the Talker to the Listener, or the reliability requirement of the stream.

In another possible implementation manner, the communication device 1800 may be configured to perform the steps performed by the SMF network element in the communication method described in any one of FIG. 20, FIG. 22, FIG. 26, FIG. 28, FIG. 32, and FIG. 33. . In this case, the communication device 1800 may be an SMF network element, or may be a chip capable of being integrated in the SMF network element.

For example, the communication device 1800 receives the first delay information of the flow from the UPF network element or the UE through the receiving module 1810, and the first delay information is used to instruct the flow to be transmitted from the stream service provider in the TSN to the first communication. The first delay of the device; the processing module 1820 determines the first target delay of the flow transmitted between the UPF network element and the UE according to the PCC rule of the flow; and the processing module 1820 according to the first time And the first target delay to determine a second delay in which the stream is transmitted from the stream service provider in the TSN to a second communication device; the sending module 1830 sends the second delay to the UPF network element or the Said UE sends second delay information, said second delay information is used to indicate said second delay; wherein said first communication device is said UPF network element and said second communication device is said UE, or the first communication device is the UE and the second communication device is the UPF network element.

Optionally, the processing module 1820 specifically uses the sum of the first delay and the first target delay as the second delay.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

Optionally, it is further determined by the processing module 1820 that the bandwidth resource can be reserved for the flow according to the PCC rule.

Optionally, the bandwidth requirement information of the flow is also sent to the UPF network element through a sending module 1830.

Optionally, the bandwidth requirement information of the stream is also sent to the access network device corresponding to the UE through the sending module 1830.

Optionally, first information is further received from the access network device through a receiving module 1810, where the first information is used to instruct the access network device to reserve bandwidth for the flow according to the bandwidth requirement information of the flow Whether the resource was successful.

Optionally, the flow information is also sent to the PCF network element through a sending module, and the flow information is used for determining a PCC rule of the flow; the PCC is also received from the PCF network element through a receiving module 1810. rule.

Optionally, the information of the stream may include at least one of the following: an identification ID of the stream, a source address and a destination address of the stream, a size of a maximum frame for transmitting the stream, and a The interval between frames, the priority of the stream, the maximum allowable delay for a single frame of the stream to be transmitted from the stream service provider to the receiver of the stream service, or the reliability requirements of the stream.

In some other possible implementation manners, the communication device 1800 may be configured to perform the steps performed by the UPF network element in the communication method described in FIG. 23. In this case, the communication device 1800 may be a UPF network element, or may be a chip capable of being integrated in the UPF network element.

For example, the communication device 1800 may receive the first delay information of the stream from the TSN through the receiving module 1810, and the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the UPF network. The first delay of the element; sending the flow information to the SMF network element through the sending module 1830, the flow information is used to determine the quality of service parameters corresponding to the flow; and the receiving module 1810 Receiving the quality of service parameter; determining a first target delay for the stream to be transmitted from the UPF network element to the UE by the processing module 1820 according to the quality of service parameter; and processing the module 1820 according to the first delay And the first target delay to determine a second delay, where the second delay refers to a delay in transmitting the stream from the streaming service provider to the UE; and to the UE through the sending module. The UE sends second delay information, where the second delay information is used to indicate the second delay.

Optionally, the processing module 1820 specifically uses the sum of the first delay and the first target delay as the second delay.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

Optionally, the receiving module 1810 also receives the bandwidth requirement information of the stream from the SMF network element; and the processing module 1820 further reserves bandwidth resources for the stream according to the bandwidth requirement information of the stream.

Optionally, first information is further received from the SMF network element through a receiving module 1810, where the first information is used to instruct an access network device corresponding to the UE to predict the flow according to the bandwidth requirement information of the flow. Whether the reserved bandwidth resources are successful.

In some other possible implementation manners, the communication device 1800 may be configured to perform the steps performed by the UPF network element in the communication method described in FIG. 25 or 27. In this case, the communication device 1800 may be a UPF network element, or may be a chip capable of being integrated in the UPF network element.

The communication device 1800 may be configured to receive the first delay information of the stream from the TSN or the UE through the receiving module 1810, where the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the first The first delay of the communication device; sending the flow information to the SMF network element through the sending module 1830, the flow information is used to determine the quality of service parameters corresponding to the flow; and the receiving module 1810 from the SMF network Receiving a quality of service parameter corresponding to the flow; processing module 1820 determines a first target delay according to the quality of service parameter corresponding to the flow, where the first target delay refers to the flow between the terminal device UE and the Delay of transmission between UPF network elements; the processing module 1820 determines a third delay according to the first delay, the first target delay, and the second target delay, and the second target delay is Refers to a delay in transmitting the flow from the second communication device to the target network element as the next hop of the second communication device in the TSN network, and the third delay refers to the flow from the flow to the The delay of the service provider transmitting to the target network element; The third delay information is sent through the sending module 1830, where the third delay information is used to indicate the third delay; wherein the first communication device is the UPF network element and the second communication device is The UE, or the first communication device is the UE and the second communication device is the UPF network element.

Optionally, the processing module 1820 specifically uses the sum of the first delay, the first target delay, and the second target delay as the third delay.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

Optionally, the bandwidth requirement information of the flow is also received from the SMF network element through the receiving module 1810; and the bandwidth resource is reserved for the flow according to the bandwidth requirement information of the flow through the processing module 1820.

Optionally, first information is further received from the SMF network element through a receiving module 1810, where the first information is used to instruct an access network device corresponding to the UE to predict the flow according to the bandwidth requirement information of the flow Whether the reserved bandwidth resources are successful.

In some other possible implementation manners, the communication device 1800 may be configured to execute the steps performed by the UPF network element in the communication method described in FIG. 26, FIG. 28, FIG. 29, or FIG. 33. In this case, the communication device 1800 may be a UPF network element, or may be a chip capable of being integrated in the UPF network element.

The communication device 1800 may be configured to receive the second delay information of the stream from the UE or the SMF network element through the receiving module 1810, where the second delay information is used to instruct the stream to be transmitted from a stream service provider in a time-sensitive network TSN A second delay to the UPF network element; the processing module 1820 determines a third delay according to the second delay and a second target delay, where the second target delay refers to the flow from A delay of the transmission of the UPF network element to the target network element that is the next hop of the UPF network element in the TSN network, and the third delay refers to the transmission of the flow from the flow service provider to all The delay of the target network element; and sending the third delay information to the target network element through the sending module 1830, where the third delay information is used to indicate the third delay.

Optionally, a processing module 1820 specifically uses the sum of the second delay and the second target delay as the third delay.

Optionally, the bandwidth requirement information of the flow is also received from the SMF network element through the receiving module 1810; and the bandwidth resource is reserved for the flow according to the bandwidth requirement information of the flow through the processing module 1820.

Optionally, first information is further received from the SMF network element through a receiving module 1810, where the first information is used to instruct an access network device corresponding to the UE to predict the flow according to the bandwidth requirement information of the flow. Whether the reserved bandwidth resources are successful.

In some other possible implementation manners, the communication device 1800 may be configured to perform steps performed by a UE in the communication method described in FIG. 20, FIG. 22, FIG. 23, or FIG. 32. In this case, the communication device 1800 may be a UE, or may be a chip capable of being integrated in the UE.

For example, the communication device 1800 may be configured to receive the second delay information of the flow from the SMF network element or the UPF network element through the receiving module 1810, where the second delay information is used to indicate that the flow is from a flow service provider in the TSN. A second delay transmitted to the UE; a third delay is determined by the processing module 1820 according to the second delay and a second target delay, where the second target delay refers to the flow from the A delay of the UE transmitting to the target network element that is the next hop of the UE in the TSN network, and the third delay refers to the transmission of the stream from the stream service provider to the target network element Time delay; sending third delay information to the target network element through a sending module 1830, where the third time delay information is used to indicate the third time delay.

Optionally, a processing module 1820 specifically uses the sum of the second delay and the second target delay as the third delay.

In other possible implementation manners, the communication device 1800 may be configured to perform steps performed by a UE in the communication method described in FIG. 21 or FIG. 31. In this case, the communication device 1800 may be a UE, or may be a chip capable of being integrated in the UE.

For example, the communication device 1800 may be configured to receive the first delay information of the flow through the receiving module 1810, where the first delay information is used to instruct the flow to be transmitted from the streaming service provider in the time-sensitive network TSN to the first communication. The first delay of the device; sending the flow information to the session management function SMF network element through the sending module 1830, and the flow information is used to determine the quality of service parameters corresponding to the flow; The SMF network element receives the quality of service parameter corresponding to the flow; the processing module 1820 determines a first target delay according to the quality of service parameter corresponding to the flow, where the first target delay refers to the flow between the UE and the UE. Delay of transmission between user plane functions UPF network elements; the processing module 1820 determines a third delay according to the first delay, the first target delay, and the second target delay, and the second target The delay refers to a delay in which the flow is transmitted from the second communication device to the target network element in the TSN network that is the next hop of the second communication device, and the third delay refers to the flow from The streaming service provider transmits The delay of the target network element; sending third delay information through a sending module 1830, where the third delay information is used to indicate the third delay; wherein the first communication device is the UPF network And the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network element.

Optionally, the processing module 1820 specifically uses the sum of the first delay, the first target delay, and the second target delay as the third delay.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

In other possible implementations, the communication device 1800 may be configured to perform steps performed by the UE in the communication method described in FIG. 29. In this case, the communication device 1800 may be a UE, or may be a chip capable of being integrated in the UE.

For example, the communication device 1800 may be configured to receive first delay information of a stream through the receiving module 1810, where the first delay information is used to indicate that the stream is transmitted from a stream service provider in the TSN to the first of the UE. Time delay; sending the flow information to the SMF network element through the sending module 1830, the flow information is used to determine the quality of service parameters corresponding to the flow; receiving the flow from the SMF network element through the receiving module 1810 Corresponding quality of service parameters; the first target delay is determined by the processing module 1820 according to the quality of service parameters corresponding to the flow, and the first target delay refers to the flow between the UE and the user plane function UPF network element The delay between transmissions; the processing module 1820 determines a second delay according to the first delay and the first target delay, where the second delay refers to the flow from the flow service provider A delay transmitted to the UPF network element; and sending a second delay information to the UPF network element through a sending module 1830, where the second delay information is used to indicate the second delay.

Optionally, the sum of the first delay and the first target delay is specifically determined as the second delay by the processing module 1820.

Optionally, the first target delay is a maximum transmission delay of the flow between the UPF network element and the UE.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.

It should be understood that the processor in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application-specific integrated circuits. (application specific integrated circuit (ASIC)), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (46)

1. A communication method, comprising:

   The session management function SMF network element receives the first delay information of the flow from the user plane function UPF network element, and the first delay information is used to instruct the flow to be transmitted to the flow service provider in the time-sensitive network TSN from the flow service provider. The first delay of the UPF network element;

   Determining, by the SMF network element, a third delay in transmitting the flow from the UPF network element to a terminal device UE according to a policy and charging control PCC rule of the flow;

   Determining, by the SMF network element, a second delay for transmitting the stream from the stream service provider in the TSN to the UE according to the first delay and the third delay;

   The SMF network element sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay.
2. The communication method according to claim 1, wherein the SMF network element determines the stream from the stream service provider in the TSN according to the first delay and the third delay. The second delay transmitted to the UE includes:

   The SMF network element determines the sum of the first delay and the third delay as the second delay.
3. A communication method, comprising:

   A session management function SMF network element receives first delay information of a stream from a terminal device UE, where the first delay information is used to indicate the first delay;

   Determining, by the SMF network element, a third delay in transmitting the flow from the UE to a user plane function UPF network element according to a policy and charging control PCC rule of the flow;

   Determining, by the SMF network element, a second delay for transmitting the stream from the UE to the UPF network element according to the first delay and the third delay;

   The SMF network element sends second delay information to the UPF network element, and the second delay information is used to indicate the second delay.
4. The communication method according to claim 3, wherein the SMF network element determines a second transmission of the stream from the UE to the UPF according to the first delay and the third delay. Delay, including:

   A value obtained by adding, by the SMF network element, the first delay and the third delay, and subtracting a default value of a transmission delay of the stream from the UE to the UPF network element Is determined as the second delay.
5. A communication method, comprising:

   The session management function SMF network element receives flow information from the terminal device UE;

   Determining, by the SMF network element, a third time delay for transmitting the flow from the UE to a user plane function UPF network element according to the flow information and the policy and charging control PCC rules of the flow;

   The SMF network element sends first delay information to the UE, where the first delay information is used to indicate the third delay.
6. A communication method, comprising:

   The session management function SMF network element receives first delay information of a stream from a first communication device, where the first delay information is used to instruct the stream to be transmitted from a stream service provider in a time-sensitive network TSN to the first First delay of communication equipment;

   Determining, by the SMF network element, a first target delay in transmitting the flow from the first communication device to the second communication device according to a policy and charging control PCC rule of the flow;

   Determining, by the SMF network element, that the stream is transmitted from the stream service provider to the TSN as the second communication according to the first delay, the first target delay, and the second target delay A third delay of a target network element of a next hop of the device, where the second target delay is a delay of the stream being transmitted from the second communication device to the target network element;

   Sending, by the SMF network element, third delay information to the first communication device, where the third delay information is used to indicate the third delay;

   The first communication device is a user plane function UPF network element and the second communication device is a terminal device UE, or the first communication device is the UE and the second communication device is the UPF Network element.
7. A communication method, comprising:

   The session management function SMF network element receives the first delay information of the flow from the user plane function UPF network element or the terminal device UE, and the first delay information is used to instruct the flow from a flow service provider in a time-sensitive network TSN A first delay transmitted to the first communication device;

   Determining, by the SMF network element, a first target delay for transmitting the flow between the UPF network element and a terminal device UE according to a policy and charging control PCC rule of the flow;

   Determining, by the SMF network element, a second delay for transmitting the stream from the stream service provider in the TSN to a second communication device according to the first delay and the first target delay;

   Sending, by the SMF network element, the second delay information to the UPF network element or the UE, where the second delay information is used to indicate the second delay;

   Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
8. The communication method according to any one of claims 1 to 7, wherein the communication method further comprises:

   The SMF network element determines that a bandwidth resource can be reserved for the flow according to the PCC rule.
9. The communication method according to any one of claims 1 to 8, wherein the communication method further comprises:

   The SMF network element sends the flow bandwidth requirement information to the UPF network element.
10. The communication method according to any one of claims 1 to 9, wherein the communication method further comprises:

    Sending, by the SMF network element, the bandwidth requirement information of the flow to an access network device corresponding to the UE.
11. The communication method according to claim 10, wherein the communication method further comprises:

    The SMF network element receives first information from the access network device, and the first information is used to indicate whether the access network device successfully reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.
12. The communication method according to any one of claims 1 to 11, wherein the communication method further comprises:

    The SMF network element sends the flow information to a policy control function PCF network element, and the flow information is used for determining a PCC rule of the flow;

    The SMF network element receives the PCC rule from the PCF network element.
13. A communication method, comprising:

    The user plane function UPF network element receives the first delay information of the flow from the time-sensitive network TSN, and the first delay information is used to instruct the flow to be transmitted from the stream service provider in the TSN to the UPF network element. First delay

    The UPF network element sends the first delay information to a session management function SMF network element, the first delay information is used for determining a second delay, and the second delay is for the flow from the A delay in transmission of the stream service provider to the terminal device UE in the TSN network;

    Receiving, by the UPF network element, second delay information from the SMF network element, where the second delay information is used to indicate the second delay;

    Sending, by the UPF network element, the second delay information to the UE.
14. A communication method, comprising:

    The user plane function UPF network element receives the first delay information of the flow from the time-sensitive network TSN, and the first delay information is used to instruct the flow to be transmitted from the stream service provider in the TSN to the UPF network element. First delay

    The UPF network element sends the flow information to the session management function SMF network element, and the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving, by the UPF network element, the quality of service parameter from the SMF network element;

    Determining, by the UPF network element according to the quality of service parameter, a first target delay in transmitting the stream from the UPF network element to a terminal device UE;

    Determining, by the UPF network element, a second delay according to the first delay and the first target delay, where the second delay refers to the transmission of the stream from the stream service provider to the UE Delay

    The UPF network element sends second delay information to the UE, where the second delay information is used to indicate the second delay.
15. A communication method, comprising:

    The user plane function UPF network element receives the first delay information of the stream from the time-sensitive network TSN or the terminal device UE, and the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the first A first delay of a communication device;

    The UPF network element sends the flow information to the session management function SMF network element, and the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving, by the UPF network element, the quality of service parameter corresponding to the flow from the SMF network element;

    Determining, by the UPF network element, a first target delay according to a service quality parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between a terminal device UE and the UPF network element;

    The UPF network element determines a third delay according to the first delay, the first target delay, and the second target delay. The second target delay refers to the flow from the second communication device. A delay of transmission to the target network element that is the next hop of the second communication device in the TSN network, the third delay refers to the transmission of the stream from the stream service provider to the target network Yuan delay

    Sending, by the UPF network element, third delay information, where the third delay information is used to indicate the third delay;

    Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
16. A communication method, comprising:

    The user plane function UPF network element receives the second delay information of the flow from the terminal device UE or the session management function SMF network element, and the second delay information is used to instruct the flow from the flow service provider in the time-sensitive network TSN A second delay transmitted to the UPF network element;

    Determining, by the UPF network element, a third delay according to the second delay and the second target delay, where the second target delay refers to the transmission of the stream from the UPF network element to the TSN network As the delay of the target network element of the next hop of the UPF network element, the third delay refers to the delay of the transmission of the flow from the flow service provider to the target network element;

    The UPF network element sends third delay information to the target network element, and the third delay information is used to indicate the third delay.
17. The communication method according to any one of claims 13 to 16, wherein the communication method comprises:

    Receiving, by the UPF network element, the bandwidth requirement information of the flow from the SMF network element;

    The UPF network element reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.
18. The communication method according to any one of claims 13 to 17, wherein the communication method further comprises:

    The UPF network element receives first information from the SMF network element, and the first information is used to indicate whether an access network device corresponding to the UE reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow. success.
19. A communication method, comprising:

    The terminal device UE sends flow information to the session management function SMF network element, and the flow information is used to determine a third delay of the flow transmitted from the UE to the user plane function UPF network element;

    Receiving, by the UE, first delay information from the SMF network element, where the first delay information is used to indicate the third delay;

    Determining, by the UE, a target delay for transmitting the stream from the UE to the UPF network element according to the third delay;

    Sending, by the UE, second delay information to the UPF network element, where the second delay information is used to indicate the target delay.
20. A communication method, comprising:

    The terminal device UE receives the second delay information of the flow from the session management function SMF network element or the user plane function UPF network element, and the second delay information is used to instruct the flow from the flow service provider in the time-sensitive network TSN A second delay transmitted to the UE;

    Determining, by the UE, a third delay according to the second delay and a second target delay, where the second target delay refers to the transmission of the stream from the UE to the TSN network as the UE The delay of the target network element of the next hop of the, the third delay refers to the delay of the stream being transmitted from the stream service provider to the target network element;

    Sending, by the UE, third delay information to the target network element, where the third delay information is used to indicate the third delay.
21. A communication method, comprising:

    A terminal device UE receives first delay information of a flow, where the first delay information is used to indicate a first delay in transmitting the flow from a streaming service provider in a time-sensitive network TSN to a first communication device;

    Sending, by the UE, the flow information to a session management function SMF network element, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving, by the UE, a quality of service parameter corresponding to the flow from the SMF network element;

    Determining, by the UE, a first target delay according to a quality of service parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between the UE and a user plane function UPF network element;

    Determining, by the UE, a third delay according to the first delay, the first target delay, and the second target delay, where the second target delay refers to the transmission of the stream from the second communication device to A delay of a target network element that is a next hop of the second communication device in the TSN network, and the third delay refers to a time during which the stream is transmitted from the stream service provider to the target network element Delay

    Sending, by the UE, third delay information, where the third delay information is used to indicate the third delay;

    Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
22. A communication method, comprising:

    A terminal device UE receives first delay information of a stream, where the first delay information is used to indicate a first delay of the stream being transmitted from a stream service provider in a time-sensitive network TSN to the UE;

    Sending, by the UE, the flow information to a session management function SMF network element, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving, by the UE, a quality of service parameter corresponding to the flow from the SMF network element;

    Determining, by the UE, a first target delay according to a quality of service parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between the UE and a user plane function UPF network element;

    Determining, by the UE, a second delay according to the first delay and the first target delay, where the second delay refers to the transmission of the stream from the stream service provider to the UPF network element Delay

    Sending, by the UE, second delay information to the UPF network element, where the second delay information is used to indicate the second delay.
23. A communication method, comprising:

    The user plane function UPF network element receives the first delay information of the flow from the time-sensitive network TSN, and the first delay information is used to instruct the flow to be transmitted from the stream service provider in the TSN to the first time of the UPF network element. A delay

    Sending, by the UPF network element, session information to a session management function SMF network element, where the flow information is used for determining a third delay in transmitting the flow from the UPF network element to a terminal device UE;

    Receiving, by the UPF network element, third delay information from the SMF network element, where the third delay information is used to indicate the third delay;

    Determining, by the UPF network element according to the first delay and the third delay, a second delay in which the stream is transmitted from the stream service provider in the TSN network to the UE;

    The UPF network element sends second delay information to the UE, where the second delay information is used to indicate the second delay.
24. The communication method according to claim 23, wherein the UPF network element determines that the stream is provided from the stream service in the TSN network according to the first delay and the third delay. The second delay of transmission from the UE to the UE includes:

    The UPF network element determines the sum of the first delay and the third delay as the second delay.
25. The communication method according to claim 23 or 24, wherein the communication method comprises:

    Receiving, by the UPF network element, the bandwidth requirement information of the flow from the SMF network element;

    The UPF network element reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.
26. The communication method according to any one of claims 23 to 25, wherein the communication method further comprises:

    The UPF network element receives first information from the SMF network element, and the first information is used to indicate whether an access network device corresponding to the UE reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow. success.
27. A communication device, comprising a receiving module, a processing module, and a sending module; and,

    Receiving the first delay information of the flow from the user plane function UPF network element through the receiving module, where the first delay information is used to instruct the flow to be transmitted from the flow service provider in the time-sensitive network TSN to the UPF The first delay of the network element;

    Determining, by the processing module, a third delay of the transmission of the flow from the UPF network element to the terminal device UE according to the policy and charging control PCC rules of the flow, and according to the first timing, by the processing module The delay and the third input delay to determine a second delay in which the stream is transmitted from the stream service provider in the TSN to the UE;

    Sending second delay information to the UPF network element through the sending module, where the second delay information is used to indicate the second delay.
28. The communication device according to claim 27, wherein the sum of the first delay and the third input delay is determined as the second delay by the processing module.
29. A communication device, comprising a receiving module, a processing module, and a sending module; and

    Receiving the first delay information of the stream from the terminal device UE through the receiving module, where the first delay information is used to indicate the first delay;

    Determining, by the processing module according to the policy and charging control PCC rules of the flow, a third delay for transmitting the flow from the UE to a user plane function UPF network element, and according to the first delay and the A third delay, determining a second delay in transmitting the stream from the UE to the UPF network element;

    Sending second delay information to the UPF network element through the sending module, where the second delay information is used to indicate the second delay.
30. The communication device according to claim 29, characterized in that the first delay and the third delay are specifically added by the processing module, and the stream is transmitted from the UE to all of them by subtracting the stream. The value obtained from the default value of the transmission delay of the UPF network element is determined as the second delay.
31. A communication device, comprising a receiving module, a processing module, and a sending module; and,

    Receiving stream information from a terminal device UE through the receiving module;

    Determining, by the processing module according to the flow information and the policy and charging control PCC rules of the flow, a third delay in transmitting the flow from the UE to a user plane function UPF network element;

    Sending first delay information to the UE through the sending module, where the first delay information is used to indicate the third delay.
32. A communication device, comprising: a receiving module, a processing module, and a sending module; and

    Receiving first delay information of a stream from a first communication device through the receiving module, where the first delay information is used to instruct the stream to be transmitted from a stream service provider in a time-sensitive network TSN to the first communication First delay of equipment;

    Determining, by the processing module, a first target delay in transmitting the flow from the first communication device to the second communication device according to a policy and charging control PCC rule of the flow;

    Determining, by the processing module, that the stream is transmitted from the stream service provider to the TSN as the second communication according to the first delay, the first target delay, and the second target delay A third delay of a target network element of a next hop of the device, where the second target delay is a delay of the stream being transmitted from the second communication device to the target network element;

    Sending third delay information to the first communication device through the sending module, where the third delay information is used to indicate the third delay;

    The first communication device is a user plane function UPF network element and the second communication device is a terminal device UE, or the first communication device is the UE and the second communication device is the UPF Network element.
33. A communication device, comprising: a receiving module, a processing module, and a sending module; and,

    Receiving the first delay information of the flow from the user plane function UPF network element or the terminal device UE through the receiving module, where the first delay information is used to instruct the flow to be transmitted from a streaming service provider in a time-sensitive network TSN A first time delay to a first communication device;

    Determining, by the processing module, a first target delay in transmitting the flow between the UPF network element and a terminal device UE according to a policy and charging control PCC rule of the flow;

    Determining, by the processing module, a second delay for transmitting the stream from the stream service provider in the TSN to a second communication device according to the first delay and the first target delay;

    Sending second delay information to the UPF network element or the UE through the sending module, where the second delay information is used to indicate the second delay;

    Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
34. The communication device according to any one of claims 27 to 33, wherein the processing module determines that a bandwidth resource can be reserved for the flow according to the PCC rule.
35. The communication device according to any one of claims 27 to 34, wherein the flow module sends the flow information to a policy control function PCF network element through the sending module, and the flow information is used for the flow. Determination of PCC rules;

    Receiving the PCC rule from the PCF network element through the receiving module.
36. A communication device, comprising a receiving module and a transmitting module; and

    Receiving, by the receiving module, first delay information of a stream from a time-sensitive network TSN, where the first delay information is used to instruct the stream to be transmitted from a stream service provider in the TSN to the UPF network element First delay

    Sending the first delay information to a session management function SMF network element through the sending module, where the first delay information is used for determining a second delay, and the second delay is for the flow from the A delay in transmission of the stream service provider to the terminal device UE in the TSN network;

    Receiving second delay information from the SMF network element through the receiving module, where the second delay information is used to indicate the second delay;

    Sending the second delay information to the UE through the sending module.
37. A communication device, comprising: a receiving module, a processing module, and a sending module; and

    Receiving first delay information of a stream from a time-sensitive network TSN through the receiving module, where the first delay information is used to instruct the stream to be transmitted from a stream service provider in the TSN to the UPF network element First delay

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving the quality of service parameter from the SMF network element through the receiving module;

    Determining, by the processing module, a first target delay in transmitting the stream from the UPF network element to the UE according to the quality of service parameter;

    Determining, by the processing module, a second delay according to the first delay and the first target delay, where the second delay refers to the transmission of the stream from the stream service provider to the UE Delay

    Sending second delay information to the UE through the sending module, where the second delay information is used to indicate the second delay.
38. A communication device, comprising: a receiving module, a processing module, and a sending module; and

    Receiving the first delay information of the stream from the time-sensitive network TSN or the terminal device UE through the receiving module, where the first delay information is used to instruct the stream to be transmitted from the stream service provider in the TSN to the first First delay of communication equipment;

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving a quality of service parameter corresponding to the flow from the SMF network element through the receiving module;

    Determining, by the processing module, a first target delay according to a quality of service parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between a terminal device UE and the UPF network element;

    Determining, by the processing module, a third delay according to the first delay, the first target delay, and the second target delay, where the second target delay refers to the flow from the second communication device A delay of transmission to the target network element that is the next hop of the second communication device in the TSN network, the third delay refers to the transmission of the stream from the stream service provider to the target network Yuan delay

    Sending third delay information through the sending module, where the third delay information is used to indicate the third delay;

    Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
39. A communication device, comprising: a receiving module, a processing module, and a sending module; and,

    Receiving the second delay information of the flow from the terminal device UE or the session management function SMF network element through the receiving module, where the second delay information is used to instruct the flow to be transmitted from a flow service provider in a time-sensitive network TSN A second delay to the UPF network element;

    Determining, by the processing module, a third delay according to the second delay and a second target delay, where the second target delay refers to the transmission of the stream from the UPF network element to the TSN network As the delay of the target network element of the next hop of the UPF network element, the third delay refers to the delay of the transmission of the flow from the flow service provider to the target network element;

    Sending third delay information to the target network element through the sending module, where the third delay information is used to indicate the fourth delay.
40. A communication device, comprising a sending module, a receiving module, and a processing module; and,

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a third delay of the flow being transmitted from the UE to the user plane function UPF network element;

    Receiving first delay information from the SMF network element through the receiving module, where the first delay information is used to indicate the third delay;

    Determining, by the processing module according to the third delay, a target delay for transmitting the stream from the UE to the UPF network element;

    Sending second delay information to the UPF network element through the sending module, where the second delay information is used to indicate the target delay.
41. A communication device, comprising: a receiving module, a processing module, and a sending module; and,

    Receiving the second delay information of the flow from the session management function SMF network element or the user plane function UPF network element through the receiving module, where the second delay information is used to instruct the flow from the flow service in the time-sensitive network TSN A second delay of transmission from the provider to the UE;

    Determining, by the processing module, a third delay according to the second delay and a second target delay, where the second target delay refers to the transmission of the stream from the UE to the TSN network as a destination. The delay of the target network element of the next hop of the UE, and the third delay refers to a delay of the stream being transmitted from the stream service provider to the target network element;

    Sending third delay information to the target network element through the sending module, where the third delay information is used to indicate the third delay.
42. A communication device, comprising: a receiving module, a processing module, and a sending module; and,

    Receiving first delay information of a stream through the receiving module, where the first delay information is used to indicate a first delay of the stream being transmitted from a stream service provider in a time-sensitive network TSN to a first communication device;

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving a quality of service parameter corresponding to the flow from the SMF network element through the receiving module;

    Determining, by the processing module, a first target delay according to a quality of service parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between the UE and a user plane function UPF network element ;

    Determining, by the processing module, a third delay according to the first delay, the first target delay, and the second target delay, where the second target delay refers to the flow from the second communication device A delay of transmission to the target network element that is the next hop of the second communication device in the TSN network, the third delay refers to the transmission of the stream from the stream service provider to the target network Yuan delay

    Sending third delay information through the sending module, where the third delay information is used to indicate the third delay;

    Wherein, the first communication device is the UPF network element and the second communication device is the UE, or the first communication device is the UE and the second communication device is the UPF network yuan.
43. A communication device, comprising: a receiving module, a processing module, and a sending module; and

    Receiving first delay information of a stream through the receiving module, where the first delay information is used to indicate a first delay of the stream being transmitted from a stream service provider in a time-sensitive network TSN to the UE;

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a quality of service parameter corresponding to the flow;

    Receiving a quality of service parameter corresponding to the flow from the SMF network element through the receiving module;

    Determining, by the processing module, a first target delay according to a quality of service parameter corresponding to the flow, where the first target delay refers to a delay in transmitting the flow between the UE and a user plane function UPF network element ;

    Determining, by the processing module, a second delay according to the first delay and the first target delay, where the second delay refers to the transmission of the stream from the stream service provider to the UPF Network element delay

    Sending second delay information to the UPF network element through the sending module, where the second delay information is used to indicate the second delay.
44. A communication device, comprising a receiving module, a sending module, and a processing module; and

    Receiving, by the receiving module, first delay information of a stream from a time-sensitive network TSN, where the first delay information is used to indicate that the stream is transmitted from a stream service provider in the TSN to the first of the UPF network element Delay

    Sending the flow information to the session management function SMF network element through the sending module, where the flow information is used to determine a third delay for the flow to be transmitted from the UPF network element to the terminal device UE;

    Receiving third delay information from the SMF network element through the receiving module, where the third delay information is used to indicate the third delay;

    Determining, by the processing module, a second delay for transmitting the stream from the stream service provider in the TSN network to the UE according to the first delay and the third delay;

    Sending second delay information to the UE through the sending module, where the second delay information is used to indicate the second delay.
45. The communication device according to any one of claims 36 to 39 or 44, wherein first information is received from the SMF network element through the receiving module, and the first information is used to indicate that the UE corresponds to Whether the successful access network device reserves bandwidth resources for the flow according to the bandwidth requirement information of the flow.
46. A computer-readable storage medium, characterized in that the computer-readable storage medium stores program code for execution by a communication device, where the program code includes a program for executing any one of claims 1 to 26. Communication method instructions.

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